| 单词 | zygomatic |
| 例句 | If I were to ask you to smile, you would flex your zygomatic major. Blink 2005-01-11T00:00:00Z He flashed a smile, activating the zygomatic major. Blink 2005-01-11T00:00:00Z The zygomatic arch, or cheekbone, is present in mammals and advanced therapsids such as cynodonts, but is not present in pelycosaurs. Fundamentals of Biology 2015-01-01T00:00:00Z A one-hour session draws on yoga and emphasizes strengthening the zygomatic muscles, which pull the corners of the mouth. Your Wednesday Briefing: Ukraine Says It Shot Down Hypersonic Missiles 2023-05-16T04:00:00Z Despite having no medical training, her curriculum, typically taught in one-hour sessions online or in person, draws on yoga and emphasizes strengthening the zygomatic muscles, which pull the corners of the mouth. Japan Is Unmasking, and Its Smile Coach Is Busy 2023-05-15T04:00:00Z The 14 facial bones are the nasal bones, the maxillary bones, zygomatic bones, palatine, vomer, lacrimal bones, the inferior nasal conchae, and the mandible. Biology for AP Courses 2022-06-09T00:00:00Z Separating these areas is the bridge of bone called the zygomatic arch. Anatomy and Physiology 2013-06-19T00:00:00Z The presence of the zygomatic arch suggests the presence of the masseter muscle, which closes the jaw and functions in chewing. Fundamentals of Biology 2015-01-01T00:00:00Z Smiles that researchers classify as “strong”—when the zygomatic muscles in the cheeks contract and lift the corners of babies’ lips—are another sign of positive engagement in what’s happening around them. What Your Baby’s Smile Can Tell You About Her Development 2015-11-23T05:00:00Z Sam Presti, the Thunder's executive vice president and general manager, announced that the procedure to repair the zygomatic arch was a success. Thunder's Russell Westbrook has surgery to repair cheekbone fracture 2015-02-28T05:00:00Z The cheek muscles, known as the zygomatic major, lift up the outside corners of the mouth, while the orbicularis oculi, a ring of muscle surrounding the eye sockets, crinkle your eyes into a happy squint. Can Your Yearbook Photo Predict Happiness, Divorce, Death? 2014-04-07T13:42:00Z The zygomatic arch is the bony arch on the side of skull that spans from the area of the cheek to just above the ear canal. Anatomy and Physiology 2013-06-19T00:00:00Z Like the Asian C. tologoijensis and other more archaic Coelodonta taxa, it has a proportionally broader skull, more anteriorly located orbits, and more curved zygomatic arches than the classic Woolly rhinos of the Late Pleistocene. The remarkable life appearance of the Woolly rhino 2013-11-09T20:45:00.523Z Skull: About the same size; smoother; zygomatic arches weaker and less widely spreading; nasals rounded posteriorly as opposed to emarginate; mastoid breadth less; pterygoid hamulae weaker; upper incisors wider. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z The zygomatic process is apt to be prominent, in keeping with the heaviness of the upper jaw. Essays In Pastoral Medicine 2012-03-05T03:00:09.993Z Zygoma, zī-gō′ma, n. the arch formed by the malar bone and the zygomatic process of the temporal bone of the skull.—adj. Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) 2012-01-30T03:00:19.113Z One of the major muscles that pulls the mandible upward during biting and chewing arises from the zygomatic arch. Anatomy and Physiology 2013-06-19T00:00:00Z In addition the zygomatic ridge of the squamosal decreases in relative size with decrease in actual size of the skull. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Skull: Zygomatic arches shorter; tympanic bullae less inflated ventrally; zygomatic breadth less; mastoid breadth greater; width across alveolar processes of maxillae greater; alveolar length of upper molar series greater; molariform teeth larger. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z In the horse, it articulates with the zygomatic process of the temporal bone. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z A to A' Zygomatic breadth.—Greatest distance across zygomatic arches of cranium at right angles to long axis of skull. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z On the lateral side of the brain case, above the level of the zygomatic arch, is a shallow space called the temporal fossa. Anatomy and Physiology 2013-06-19T00:00:00Z The facial portion of the skull is very short; a long process of the maxillary bone descends from the anterior part of the zygomatic arch; and the ascending ramus of the mandible is remarkably high. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z They are markedly smaller in every measurement taken, except zygomatic and mastoidal breadths, and extension of premaxillae posterior to nasals. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z In the horse the same arch, less prominent externally, is prolonged by a rectilinear crest on the superior maxillary bone, where it is continued in forming the zygomatic or maxillary spine. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z Skull.—Difference in occipitonasal length and zygomatic breadth, both having low coefficients of variation, are useful in separating species, especially where they are sympatric. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z Below the level of the zygomatic arch and deep to the vertical portion of the mandible is another space called the infratemporal fossa. Anatomy and Physiology 2013-06-19T00:00:00Z The posterior rami are short; the zygomatic rami of all species, except taurinus, extend slightly more than one-half of the distance to the maxillary. A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus 2011-10-04T02:00:15.227Z Tympanic bullae larger and markedly more inflated; nasals longer; zygomatic and mastoidal breadths greater; rostrum longer and more depressed; upper incisors longer and wider; molariform teeth smaller. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z Now, in man, we remember, it is the great zygomatic that, by an action of the same kind, determines the essential characters of the expression of laughing. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z As yet there is no clear evidence that reduction of the zygomatic arch is of adaptive value. Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz 2011-10-01T02:00:30.200Z Figure 7.5 Lateral View of Skull The lateral skull shows the large rounded brain case, zygomatic arch, and the upper and lower jaws. Anatomy and Physiology 2013-06-19T00:00:00Z In taurinus the zygomatic ramus extends nearly to, or articulates with, the maxillary. A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus 2011-10-04T02:00:15.227Z Skull: Smaller; rostrum heavier, shorter and more depressed; zygomatic arches shorter, heavier and not so widely spreading; no widening of supraoccipital as in nesophilus; upper incisors shorter and more recurved. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z According to other authors, some of the fibres of this muscle constitute the small zygomatic. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z Zygomatic breadth.—The greatest distance across the zygomatic arches, at right angles to the long axis of the skull. Geographic Variation in the Pocket Gopher, Thomys bottae, in Colorado 2011-09-06T02:00:10.127Z The zygomatic arch is formed jointly by the zygomatic process of the temporal bone and the temporal process of the zygomatic bone. Anatomy and Physiology 2013-06-19T00:00:00Z Zygomatic breadth.—The greatest distance across the zygomatic arches. Subspeciation in Pocket Gophers of Kansas, [KU. Vol. 1 No. 11] 2011-07-09T02:00:11.847Z Other distinguishing characters are: Zygomatic arches more widely spreading; length of zygomatic processes of maxillae greater; and relatively longer, narrower rostrum. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z Arising from the zygomatic arch, and passing downwards and backwards, it is inserted into the external surface of the ramus of the mandible and into its angle. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z Characters such as color of the pelage and conformation of the bullae and zygomatic arches vary with the locality, and to some extent vary among specimens from a single locality. Geographic Variation in the Pocket Gopher, Thomys bottae, in Colorado 2011-09-06T02:00:10.127Z The shallow space above the zygomatic arch is the temporal fossa. Anatomy and Physiology 2013-06-19T00:00:00Z In color they agree with majusculus, as they do also in width of nasals posteriorly, in more obtuse angle of the rostrum and maxillary arm of the zygomatic arch. Subspeciation in Pocket Gophers of Kansas, [KU. Vol. 1 No. 11] 2011-07-09T02:00:11.847Z Skull: Small and not heavily ridged; zygomatic arches widely spreading but weak; zygomatic arches nearly parallel; tympanic bullae moderately inflated ventrally; palate not arched; interpterygoid space U-shaped; dentition light. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z Indeed, in the dog and the cat the zygomatic arch, strongly convex, springs up in a marked manner from the plane of the lateral aspects of the skull. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z Topotypes of T. b. cultellus most closely resemble those of T. b. internatus but differ as follows: darker; zygomatic arches more widely spreading, not so nearly parallel; nasals not so wide; bullae slightly more inflated. Geographic Variation in the Pocket Gopher, Thomys bottae, in Colorado 2011-09-06T02:00:10.127Z The space inferior to the zygomatic arch and deep to the posterior mandible is the infratemporal fossa. Anatomy and Physiology 2013-06-19T00:00:00Z Description.—A yellowish-cinnamon colored animal, with body of medium size, zygomatic plate of maxilla deep and mastoid process small. Subspeciation in Pocket Gophers of Kansas, [KU. Vol. 1 No. 11] 2011-07-09T02:00:11.847Z Skull: Long and slender; rostrum long and narrow; zygomatic and mastoidal breadths slight; palatal pits deep; upper incisors narrow; basioccipital wide. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z Thence it is directed, widening as it proceeds, towards the scutiform cartilage, and is there inserted by blending with the corresponding part of the great zygomatic. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z The cheekbones and zygomatic arch are prominent, and a degree of prognathism is prevalent. In the Andamans and Nicobars The Narrative of a Cruise in the Schooner "Terrapin" 2011-06-30T02:00:24.487Z Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Anatomy and Physiology 2013-06-19T00:00:00Z In sixteen cases the zygomatic processes were unequal and very prominent. Degeneracy Its Causes, Signs and Results 2011-05-02T02:00:17.657Z Skull: Generally narrower and longer; nasals longer; zygomatic arches weaker and less angular; upper incisors narrower. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z The zygomatic arch usually incomplete, owing to the absence of the jugal bone; no distinct lacrymal bone; and the palate long and narrow. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 "Echinoderma" to "Edward" 2011-01-19T03:00:19.027Z There is no overlap in length of body, basilar length, zygomatic breadth, mastoidal breadth or length of nasals. A New Pocket Gopher (Genus Thomomys), from Eastern Colorado 2011-01-06T03:00:54.030Z Figure 7.7 Temporal Bone A lateral view of the isolated temporal bone shows the squamous, mastoid, and zygomatic portions of the temporal bone. Anatomy and Physiology 2013-06-19T00:00:00Z It shows the characteristic hippopotamus-flange to the lower jaw, but has also a large descending process from the jugal bone of the zygomatic arch of the skull. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of" Skull: Braincase less inflated; nasals truncated posteriorly as opposed to rounded; zygomatic and mastoidal breadths less; rostrum shorter but narrower; upper incisors narrower and shorter. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z The zygomatic arches are less strong than they are in an average white male; and the mastoids are small, even smaller than in an average adult white female. A Bilateral Division of the Parietal Bone in a Chimpanzee; with a Special Reference to the Oblique Sutures in the Parietal Remarks.—Microtus p. alcorni is a well-defined subspecies differing markedly from adjacent subspecies by a larger and heavier skull and broader, more rounded and heavier zygomatic arches. Mammals taken Along the Alaska Highway The pterion is located approximately two finger widths above the zygomatic arch and a thumb’s width posterior to the upward portion of the zygomatic bone. Anatomy and Physiology 2013-06-19T00:00:00Z Because they more nearly resemble T. b. aphrastus in the weakly-spreading zygomatic arches, we refer the specimens from San Antonio to that subspecies. Comments on the Taxonomy and Geographic Distribution of Some North American Rodents Skull: Broader, more angular and more nearly flat; zygomatic arches more widely spreading; zygomatic processes of maxillae heavier; posterior ends of nasals emarginate rather than rounded; upper incisors longer. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z Of the various facial sutures, only remnants are open; the suture in the zygomatic arch, however, is almost fully patent on both sides. A Bilateral Division of the Parietal Bone in a Chimpanzee; with a Special Reference to the Oblique Sutures in the Parietal Skull with the zygomatic arches and sagittal crest immensely developed, ascending branch of lower jaw very high, giving great space for attachment of temporal muscle, and facial portion short. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4 "Carnegie Andrew" to "Casus Belli" The paired bones are the maxilla, palatine, zygomatic, nasal, lacrimal, and inferior nasal conchae bones. Anatomy and Physiology 2013-06-19T00:00:00Z On the basis of paler color, reduced lateral line, smaller skull, shorter palatal bridge and zygomatic arches, they are, among named subspecies, best referred to Zapus princeps idahoensis. Comments on the Taxonomy and Geographic Distribution of Some North American Rodents Skull: Shorter; nasals shorter; zygomatic breadth less; nasals truncate or shallowly emarginate posteriorly as opposed to rounded; upper incisors narrower. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z These are: Greatest length of skull, zygomatic breadth, cranial breadth, length of nasals, length of lower tooth-row, condylo-alveolar length of mandible, and inner mandibular length. Geographic Distribution and Taxonomy of the Chipmunks of Wyoming The skull generally is short and rounded, though proportionally more elongated in the larger forms; with the facial portion short and broad, and the zygomatic arches wide and strong. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4 "Carnegie Andrew" to "Casus Belli" These consist of 14 bones, with the paired maxillary, palatine, zygomatic, nasal, lacrimal, and inferior conchae bones and the unpaired vomer and mandible bones. Anatomy and Physiology 2013-06-19T00:00:00Z The species included in this group represent some ten genera, distinguished principally by differences in the form and number of the teeth, and the presence or absence of the zygomatic, arch of the skull. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 2 "Chicago, University of" to "Chiton" Skull: Generally larger in every measurement taken; zygomatic arches shorter; width across alveolar processes of maxillae greater; zygomatic arches more widely spreading, and widest in extreme posterior region rather than in region of jugal-squamosal suture. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z Skull: Large; braincase well inflated; zygomatic arches strong and slightly appressed to skull. Taxonomy of the Chipmunks, Eutamias quadrivittatus and Eutamias umbrinus Position of supraorbital notch in relation to posterior notch of zygomatic plate. even with or slightly posterior. anterior. anterior. Genera and Subgenera of Chipmunks The walls of the orbit are formed by contributions from seven bones: the frontal, zygomatic, maxillary, palatine, ethmoid, lacrimal, and sphenoid. Anatomy and Physiology 2013-06-19T00:00:00Z The more lateral of these, the masseter, arose from the inner surface and lower margin of the zygomatic bar and inserted on the lateral surface of the coronoid process. The Adductor Muscles of the Jaw In Some Primitive Reptiles In shape of the zygomatic arches, length of the nasals, and color, they resemble centralis to which they are here referred. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z The anterior edge of the base of the zygomatic arch of KU no. Records of the Fossil Mammal Sinclairella, Family Apatemyidae, From the Chadronian and Orellan The skull of a toy-terrier has much restricted areas of insertion for the temporal muscles; has weak zygomatic arches; and has extremely small attachments for the masseter muscles. Essays: Scientific, Political, & Speculative, Vol. I The frontal bone forms the roof and the zygomatic bone forms the lateral wall and lateral floor. Anatomy and Physiology 2013-06-19T00:00:00Z The crest extends on either side downward to its confluence with the zygomatic bar. The Adductor Muscles of the Jaw In Some Primitive Reptiles Skull: Rostrum longer, narrower and more depressed; skull convex rather than flat; nasals longer, and convex rather than flat; tympanic bullae larger; zygomatic arches shorter and more massive; molariform teeth larger. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z The specimens from Columbia and Dane counties differ from P. p. schmidti in the greater zygomatic breadth, and lesser height of skull. Comments on the Taxonomy and Geographic Distribution of North American Microtines From Dipodomys ordii compactus of Padre Island, Texas, D. o. parvabullatus differs in: Tail and hind foot shorter; skull smaller in all parts measured, especially so in breadth across maxillary processes of zygomatic arches. Mammals Obtained by Dr. Curt von Wedel from the Barrier Beach of Tamaulipas, Mexico On the lateral skull, the zygomatic arch consists of two parts, the temporal process of the zygomatic bone anteriorly and the zygomatic process of the temporal bone posteriorly. Anatomy and Physiology 2013-06-19T00:00:00Z The zygomatic bar in Thrinaxodon extends relatively far forward, is bowed outward and dorsally arched. The Adductor Muscles of the Jaw In Some Primitive Reptiles Skull: Smaller, more convex; rostrum shorter, wider and more depressed; zygomatic arches shorter and heavier; mastoidal breadth actually, as well as relatively wider; tympanic bullae more inflated ventrally; upper incisors shorter and wider. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z Burglars who break into houses have as a rule woolly hair, deformed cranium, powerful jaws, and enormous zygomatic arches, are covered with scars on the head and trunk, and are often tatooed. A Plea for the Criminal Being a reply to Dr. Chapple's work: 'The Fertility of the Unfit', and an Attempt to explain the leading principles of Criminological and Reformatory Science The zygomatic arch is occasionally fractured by a direct blow. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. The temporal fossa is the shallow space located on the lateral skull above the level of the zygomatic arch. Anatomy and Physiology 2013-06-19T00:00:00Z The process extends above the most dorsal point of the zygomatic bar, as in Didelphis. The Adductor Muscles of the Jaw In Some Primitive Reptiles Skull: Smaller and more nearly flat; rostrum shorter and more depressed; zygomatic arches shorter, heavier and widest posteriorly rather than anteriorly; interpterygoid space V-shaped as opposed to lyre-shaped; upper incisors shorter, narrower and more recurved. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z Surely hard biting is sufficiently appreciable by the person bitten without any visual admeasurement of the masseter muscles or the zygomatic arches. Are the Effects of Use and Disuse Inherited? An Examination of the View Held by Spencer and Darwin Again, in order to enable the jaw to seize with facility, a certain form of condyle is necessary, and the zygomatic arch must be well developed to give attachment to the masseter muscle. The World's Greatest Books — Volume 15 — Science The infratemporal fossa is located below the zygomatic arch and deep to the ramus of the mandible. Anatomy and Physiology 2013-06-19T00:00:00Z In the zygomatic arch the posterior or projecting point of the malar-bone is broader and blunter; and in the specimen, fig. The Variation of Animals and Plants Under Domestication, Vol. I. Skull: Smaller, more convex and compact; rostrum shorter, heavier, more depressed and compact; zygomatic arches shorter and more robust; upper incisors shorter and more recurved. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z In fractures of the orbital or the zygomatic bones the danger is less pressing than with injuries otherwise located about the head. Special Report on Diseases of the Horse In two other cases that I saw, in one the bullet was lodged in the zygomatic fossa, in the second just below the mastoid process. Surgical Experiences in South Africa, 1899-1900 Being Mainly a Clinical Study of the Nature and Effects of Injuries Produced by Bullets of Small Calibre These are the paired maxillary, palatine, zygomatic, nasal, lacrimal, and inferior nasal conchae bones, and the unpaired vomer and mandible bones. Anatomy and Physiology 2013-06-19T00:00:00Z The molar teeth have increased in size proportionally with the increased width of the skull, measured across the zygomatic arch, and not proportionally with its increased length. The Variation of Animals and Plants Under Domestication, Vol. I. Skull: Smaller in every measurement taken; rostrum narrower; nasals arched instead of flat; zygomatic arches neither angular, massive nor widely spreading; upper incisors narrower; molariform teeth markedly smaller and weaker. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z A similarly significant evidence of relationship is afforded by processes of the zygomatic region of the skull in certain edentates existing and extinct. On the Genesis of Species The zygomatic arch is wider and stronger; the lower jaw stronger and higher, and the upper tubercular grinders shorter and thicker than in Ursus Isabellinus. Natural History of the Mammalia of India and Ceylon The face is long, moderately broad, and the zygomatic arches are seldom prominent. The Wild Tribes of Davao District, Mindanao The R. F. Cummings Philippine Expedition The condition is liable to spread to the zygomatic and frontal bones, the vault of the skull, and to the mandible. Manual of Surgery Volume First: General Surgery. Sixth Edition. They are like aureiventris in the shape of the zygomatic arches, and in the bowing of the parietal crests. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z The orbits varied in width and height, the cranial ridge was either single or double, either much or little developed, and the zygomatic aperture varied considerably in size. Darwinism (1889) It would be interesting to know whether the zygomatic arch is perfect and the tibia and fibula united, as in the hedgehogs, or wanting and distinct as in the shrews. Natural History of the Mammalia of India and Ceylon In sixteen the zygomatic processes were unequal and very prominent. Studies in the Psychology of Sex, Volume 6 Sex in Relation to Society He also sees distinctly through the zygomatic arches on both sides, which in the European skull is impossible, as the lateral portions of the frontal bone are more developed. The Bushman — Life in a New Country Skull: Larger; mastoid breadth less; zygomatic arches wider and more widely spreading posteriorly; median frontal depression more marked; extension of premaxillae posterior to nasals greater; tympanic bullae less inflated ventrally; molariform teeth larger. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z The arch formed by the malar bone and the zygomatic process of the temporal bone. A Practical Physiology This genus has four molars less than the last, a shorter muzzle; the cheek-bones or zygomatic arch more projecting; tongue rather longer and more tapering, and slightly extensile. Natural History of the Mammalia of India and Ceylon The molar teeth have increased in size proportionately with the increased width of the skull, measured across the zygomatic arch, and not proportionally with its increased length. The Variation of Animals and Plants under Domestication — Volume 1 Some of the fibres appear to be antagonistic to the great zygomatic muscle, and others to the several muscles running to the outer part of the upper lip. The Expression of the Emotions in Man and Animals Some of the animals are practically indistinguishable in color and there are intergrading cranial characters in the nasals, zygomatic arches and tympanic bullae. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z A, palate process of upper jawbone; B, zygoma, forming zygomatic arch; C, condyle for forming articulation with atlas; D, foramen magnum; E, occipital bone. A Practical Physiology The skull has a more carnivorous form; it has "a complete zygomatic arch, and the tympanic bone forms a bundle-like swelling on each side of the back of the skull." Natural History of the Mammalia of India and Ceylon In the zygomatic arch the posterior or projecting point of the malar-bone is broader and blunter; and in the specimen, figure 8, it is so in a remarkable degree. The Variation of Animals and Plants under Domestication — Volume 1 This latter muscle runs parallel to and above the great zygomatic, and is attached to the outer part of the upper lip. The Expression of the Emotions in Man and Animals Skull: Smaller, slenderer and more nearly flat; palate nearly flat as opposed to arched; zygomatic arches weaker and not so widely spreading; interparietal narrower; tympanic bullae smaller; dentition weaker. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z The breadth across the zygomatic arch is 2·38 against 3·64 of A. collaris. Natural History of the Mammalia of India and Ceylon The lower jaw is very massive, and the ascending ramus unusually large, extending far above the zygomatic arch, forming almost a right angle with equal arms. Natural History of the Mammalia of India and Ceylon In another part M. Milne-Edwards remarks that there is no carnivorous animal of which the zygomatic arches are so developed as in the Ailuropus. Natural History of the Mammalia of India and Ceylon By the drawing backwards and upwards of the corners of the mouth, through the contraction of the great zygomatic muscles, and by the raising of the upper lip, the cheeks are drawn upwards. The Expression of the Emotions in Man and Animals The orbit is extremely small, the temporal fossa large, and the zygomatic processes of the squamosal are greatly developed. Natural History of the Mammalia of India and Ceylon Laughter is suppressed by the firm contraction of the orbicular muscles of the mouth, which prevents the great zygomatic and other muscles from drawing the lips backwards and upwards. The Expression of the Emotions in Man and Animals |
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