单词 | respiratory center |
例句 | How often a breath is taken and how much air is inhaled or exhaled are tightly regulated by the respiratory center in the brain. Biology for AP Courses 2022-06-09T00:00:00Z High carbon dioxide levels cause acidosis and stimulate the respiratory center in the brain, triggering the newborn to take a breath. Anatomy and Physiology 2013-06-19T00:00:00Z Novichok is believed to directly affect the brain’s respiratory centers, and considerable time may pass before a patient can breathe on his or her own. A Week After Novichok Exposure, 2 Britons’ Lives Hang in the Balance 2018-07-07T04:00:00Z Since nerve agents affect the respiratory center in the brain and reduces the amount of oxygen in the body, the primary worry for people exposed to nerve agents is brain damage, he said. UK says ex-spy poisoned with Soviet-developed nerve agent 2018-03-12T04:00:00Z In most nerve agent fatalities, death occurs after the agent binds to enough AChE to block signal transmission from the brain's respiratory center to the diaphragm, paralyzing the muscle that's vital for breathing. Seeking answers for Iran’s chemical weapons victims—before time runs out 2018-01-04T05:00:00Z The respiratory center that provides autonomic control of breathing is part of the medulla oblongata. Biology for AP Courses 2022-06-09T00:00:00Z However, in addition to low oxygen, high carbon dioxide, and low pH levels, there appears to be a complex interplay of factors related to the nervous system and the respiratory centers of the brain. Anatomy and Physiology 2013-06-19T00:00:00Z Otherwise, the opioids overwhelm the brain’s respiratory center, causing cardiac arrest. Perspective | What the opioid epidemic looks like on the screen of a brain scan 2017-12-01T05:00:00Z “Both work centrally in your brain to depress your respiratory center,” says Rech. Is It Risky to Drink While You’re on Medication? 2016-07-21T04:00:00Z In particularly susceptible individuals, irritable respiratory centers may be affected with consequent asthmatic seizures. Psychotherapy 2011-06-19T02:00:20.053Z There Dr. Plum developed a respiratory center, in part because many unconscious and paralyzed patients develop respiratory failure. Fred Plum, Neurologist Who Helped Coin ?Persistent Vegetative State,? Dies at 86 2010-06-12T23:26:00Z Both respiratory rate and depth are controlled by the respiratory centers of the brain, which are stimulated by factors such as chemical and pH changes in the blood. Anatomy and Physiology 2013-06-19T00:00:00Z With the possible exception of curare, this is the deadliest poison known, the slightest scratch from a dart thus poisoned paralyzing the respiratory center and causing almost instant death. Where the Strange Trails Go Down Sulu, Borneo, Celebes, Bali, Java, Sumatra, Straits Settlements, Malay States, Siam, Cambodia, Annam, Cochin-China Through the impulses passing from the respiratory center to the muscles, a rhythmic action is maintained sufficient to satisfy the usual needs of the body for oxygen. Physiology and Hygiene for Secondary Schools It paralyzes respiration finally by a secondary depressant action upon the respiratory center. Scientific American Supplement, No. 508, September 26, 1885 "On examination," Dr. North weighed his words carefully, "I found a powerful drug had evidently been used, producing instantaneous death by paralyzing the respiratory center and arresting the heart action." I Spy The increase in hydrogen ions in the brain triggers the central chemoreceptors to stimulate the respiratory centers to initiate contraction of the diaphragm and intercostal muscles. Anatomy and Physiology 2013-06-19T00:00:00Z It is injury to this respiratory center which proves fatal in cases of broken neck. A Practical Physiology The respiratory center is also connected by afferent nerves with the mucous membrane of the air passages. Physiology and Hygiene for Secondary Schools Nervous and physical rest, with plenty of sleep and fresh, clean air so that the respiratory center is normally stiniulated, will generally improve this condition in an adult. Disturbances of the Heart In central sleep apnea, the respiratory centers of the brain do not respond properly to rising carbon dioxide levels and therefore do not stimulate the contraction of the diaphragm and intercostal muscles regularly. Anatomy and Physiology 2013-06-19T00:00:00Z The hypothalamus and other brain regions associated with the limbic system also play roles in influencing the regulation of breathing by interacting with the respiratory centers. Anatomy and Physiology 2013-06-19T00:00:00Z Various mental influences from the brain itself, as the emotions of alarm or joy or distress, modify the action of the respiratory center. A Practical Physiology There is also a connection between the cerebrum and the respiratory center. Physiology and Hygiene for Secondary Schools Part of the extra respiratory stimulus comes from the imperfectly aerated blood reaching the respiratory center. Disturbances of the Heart In addition, some pharmacologic agents, such as morphine, can affect the respiratory centers, causing a decrease in the respiratory rate. Anatomy and Physiology 2013-06-19T00:00:00Z They signal the cardiovascular center as well as the respiratory centers in the medulla oblongata. Anatomy and Physiology 2013-06-19T00:00:00Z At rest, the respiratory system performs its functions at a constant, rhythmic pace, as regulated by the respiratory centers of the brain. Anatomy and Physiology 2013-06-19T00:00:00Z The demand of the body for oxygen, however, varies with its activities, and to such variations the respiratory center alone is unable to respond. Physiology and Hygiene for Secondary Schools First, a conscious decision to partake in exercise, or another form of physical exertion, results in a psychological stimulus that may trigger the respiratory centers of the brain to increase ventilation. Anatomy and Physiology 2013-06-19T00:00:00Z In addition, the respiratory centers of the brain may be stimulated through the activation of motor neurons that innervate muscle groups that are involved in the physical activity. Anatomy and Physiology 2013-06-19T00:00:00Z The respiratory rate is controlled by the respiratory center located within the medulla oblongata in the brain, which responds primarily to changes in carbon dioxide, oxygen, and pH levels in the blood. Anatomy and Physiology 2013-06-19T00:00:00Z Normally, the respiratory centers of the brain maintain a consistent, rhythmic breathing cycle. Anatomy and Physiology 2013-06-19T00:00:00Z If the blood contains much carbon dioxide and little oxygen, it acts as a strong stimulus to the respiratory center, causing it, in turn, to stimulate the respiratory muscles with greater intensity and frequency. Physiology and Hygiene for Secondary Schools Changes in the pH of CSF affect the respiratory center in the medulla oblongata, which can directly modulate breathing rate to bring the pH back into the normal range. Anatomy and Physiology 2013-06-19T00:00:00Z |
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