| 单词 | myocardium |
| 例句 | He stepped on his switch and said, “There are two lacerations of the myocardium; a one-point-five-centimeter laceration in the right ventricle and a one-point-eight-centimeter laceration penetrating the left ventricle.” American Gods 2011-06-21T00:00:00Z The heart is composed of three layers; the epicardium, the myocardium, and the endocardium, illustrated in Figure 31.11. Biology for AP Courses 2022-06-09T00:00:00Z Some of this blood moves through the coronary arteries into the myocardium, and some moves through the carotid arteries to the brain. Anatomy and Physiology 2013-06-19T00:00:00Z In a second study involving autopsies from 39 COVID-19 cases, researchers found a presence of viral infection within the myocardium or the middle, muscular layer of the heart, in 24 patients. German coronavirus studies identify heart issues in COVID-19 patients 2020-07-29T04:00:00Z Growth of engineered human myocardium with mechanical loading and vascular coculture. Advanced maturation of human cardiac tissue grown from pluripotent stem cells 2018-04-03T04:00:00Z A week later, we performed left lateral thoracotomy and injected adenovirus carrying complementary DNA encoding CCNA2 or null adenovirus into peri-infarct myocardium. [Research Articles] Cyclin A2 Induces Cardiac Regeneration After Myocardial Infarction Through Cytokinesis of Adult Cardiomyocytes 2014-02-19T19:26:06.145Z The myocardium consists of the heart muscle cells that make up the middle layer and the bulk of the heart wall. Biology for AP Courses 2022-06-09T00:00:00Z It is the contraction of the myocardium that pumps blood through the heart and into the major arteries. Anatomy and Physiology 2013-06-19T00:00:00Z One may safely assume that the flutter is a sign of a failing myocardium and sooner or later the heart will pass to the graver stage of auricular fibrillation. Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. 2011-10-11T02:01:07.890Z Temporary propagation block throughout the ventricular myocardium could possibly terminate these arrhythmias. [Research Articles] Reversible Cardiac Conduction Block and Defibrillation with High-Frequency Electric Field 2011-09-28T20:25:45.923Z This increases diastolic pressure, which increases coronary perfusion and oxygen delivery to the myocardium, and facilitates ejection of blood from the left ventricle. No Benefit for Routine Counterpulsation Found in CRISP AMI 2011-08-30T11:53:18Z Finally, the Purkinje fibers conduct the impulse from the apex of the heart up the ventricular myocardium, and then the ventricles contract. Biology for AP Courses 2022-06-09T00:00:00Z The middle and thickest layer is the myocardium, made largely of cardiac muscle cells. Anatomy and Physiology 2013-06-19T00:00:00Z In the pulmonary and carotid arteries, in the vena cavas and myocardium, there were extensive necroses and hyaline degeneration. Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. 2011-10-11T02:01:07.890Z In course of time there develops cardiac insufficiency with fibroid degeneration of the myocardium. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. But the practitioner must be assured that neither valvular lesion nor degeneration of the myocardium is present. The Project Gutenberg Encyclopedia Volume 1 of 28 Purkinje fibers conduct impulse from the apex up the ventricular myocardium, causing the ventricles to contract. Biology for AP Courses 2022-06-09T00:00:00Z It is built upon a framework of collagenous fibers, plus the blood vessels that supply the myocardium and the nerve fibers that help regulate the heart. Anatomy and Physiology 2013-06-19T00:00:00Z It must be remembered that in arteriosclerosis the changes in the myocardium must be of a considerable grade for the heart to give away. Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. 2011-10-11T02:01:07.890Z The prognosis depends on the condition of the myocardium of the vagus. Disturbances of the Heart The conductive cells within the heart establish the heart rate and transmit it through the myocardium. Anatomy and Physiology 2013-06-19T00:00:00Z Purkinje fibers conduct the impulse from the apex up the ventricular myocardium, causing the ventricles to contract. Biology for AP Courses 2022-06-09T00:00:00Z The innermost layer of the heart wall, the endocardium, is joined to the myocardium with a thin layer of connective tissue. Anatomy and Physiology 2013-06-19T00:00:00Z Figure 19.8 Differences in Ventricular Muscle Thickness The myocardium in the left ventricle is significantly thicker than that of the right ventricle. Anatomy and Physiology 2013-06-19T00:00:00Z If a pregnant woman is known to have a degenerative condition of the myocardium, or arteriosclerosis, the danger from the pregnancy is serious, and the pregnancy should rarely be allowed to continue. Disturbances of the Heart The relative importance of this pathway has been debated since the impulse would reach the atrioventricular node simply following the cell-by-cell pathway through the contractile cells of the myocardium in the atria. Anatomy and Physiology 2013-06-19T00:00:00Z Purkinje fibers conduct impulse from the apex up the ventricular myocardium, causing the ventricles to contract. Biology for AP Courses 2022-06-09T00:00:00Z The septa are physical extensions of the myocardium lined with endocardium. Anatomy and Physiology 2013-06-19T00:00:00Z They extend throughout the myocardium from the apex of the heart toward the atrioventricular septum and the base of the heart. Anatomy and Physiology 2013-06-19T00:00:00Z The mere determination as to where the apex beat is located, and as to what murmurs may be present is not sufficient; we must attempt to determine the probable condition of the myocardium. Disturbances of the Heart The two major systemic veins, the superior and inferior venae cavae, and the large coronary vein called the coronary sinus that drains the heart myocardium empty into the right atrium. Anatomy and Physiology 2013-06-19T00:00:00Z The bundle of His conduct impulse from the apex up the ventricular myocardium, causing the ventricles to contract. Biology for AP Courses 2022-06-09T00:00:00Z The walls of the heart are composed of an outer epicardium, a thick myocardium, and an inner lining layer of endocardium. Anatomy and Physiology 2013-06-19T00:00:00Z When the myocardium of the ventricle contracts, pressure within the ventricular chamber rises. Anatomy and Physiology 2013-06-19T00:00:00Z Therefore when a heart has serious lesions, whether of the myocardium or of the valves, with compensation only sufficient, the action of caffein in any form is contraindicated. Disturbances of the Heart The resulting blockage restricts the flow of blood and oxygen to the myocardium and causes death of the tissue. Anatomy and Physiology 2013-06-19T00:00:00Z If the myocardium is much inflamed at the same time, the heart becomes more rapid and the blood tension lowered, and the apex beat diminished in intensity and perhaps not palpable. Disturbances of the Heart Each is attached to chordae tendineae that extend to the papillary muscles, which are extensions of the myocardium, to prevent the valves from being blown back into the atria. Anatomy and Physiology 2013-06-19T00:00:00Z A common characteristic in a large proportion of middle-aged or old patients with heart disease is the presence of degenerative changes in the myocardium, the valves, or the arteries of the heart. Disturbances of the Heart Fraenkel found these nodules in the myocardium in a case of chorea, showing the close relationship between it and rheumatism. Disturbances of the Heart The cardiac lesions which cause a pulse to be slow are sclerosis or thrombosis of the coronary arteries, fatty degeneration of the myocardium, and Stokes-Adams disease. Disturbances of the Heart While the myocardium is the most important muscle structure of the body, it has but recently been studied carefully or well understood clinically or pathologically. Disturbances of the Heart |
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