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Author: Pei Chin Tang Publisher: ISBN: Category : Brain stem Languages : en Pages : 40
Book Description
A study was made on the roles of the Hering-Breuer reflex, the pneumotaxic center, the apneustic center, and the medullary respiratory center in the regulation of rate and depth of respiration in response to changes in blood concentration of CO2 and 02. Integrated phrenic nerve discharge, abdominal respiratory movement, and intra-abdominal and intratracheal pressures were recorded in decerebrate cats as they breathed air, 5% CO2, 7% CO2, 10% 02 and 100% 02. By using decerebrate cats as control, results from vagotomy, pneumotaxic center ablation, and brain stem transection, alone or in combination, indicate: (1) Hering-Breuer reflex controls respiratory rate and in the absence of pneumotaxic center, maintains a constant depth; (2) pneumotaxic center controls respiratory depth and in the absence of Hering-Breuer reflex, maintains a constant rate; (3) apneustic center provides maximum respiratory depth and prolonged inspiratory duration so that rate can be regulated by Hering-Breuer reflex and depth by pneumotaxic center; (4) medullary respiratory center serves as a final pathway and integration center of the impulses from the higher centers. (Author).
Author: Pei Chin Tang Publisher: ISBN: Category : Brain stem Languages : en Pages : 40
Book Description
A study was made on the roles of the Hering-Breuer reflex, the pneumotaxic center, the apneustic center, and the medullary respiratory center in the regulation of rate and depth of respiration in response to changes in blood concentration of CO2 and 02. Integrated phrenic nerve discharge, abdominal respiratory movement, and intra-abdominal and intratracheal pressures were recorded in decerebrate cats as they breathed air, 5% CO2, 7% CO2, 10% 02 and 100% 02. By using decerebrate cats as control, results from vagotomy, pneumotaxic center ablation, and brain stem transection, alone or in combination, indicate: (1) Hering-Breuer reflex controls respiratory rate and in the absence of pneumotaxic center, maintains a constant depth; (2) pneumotaxic center controls respiratory depth and in the absence of Hering-Breuer reflex, maintains a constant rate; (3) apneustic center provides maximum respiratory depth and prolonged inspiratory duration so that rate can be regulated by Hering-Breuer reflex and depth by pneumotaxic center; (4) medullary respiratory center serves as a final pathway and integration center of the impulses from the higher centers. (Author).
Author: Pei Chin Tang Publisher: ISBN: Category : Languages : en Pages : 31
Book Description
A study was made on the roles of the Hering-Breuer reflex, the pneumotaxic center, the apneustic center, and the medullary respiratory center in the regulation of rate and depth of respiration in response to changes in blood concentration of CO2 and 02. Integrated phrenic nerve discharge, abdominal respiratory movement, and intra-abdominal and intratracheal pressures were recorded in decerebrate cats as they breathed air, 5% CO2, 7% CO2, 10% 02 and 100% 02. By using decerebrate cats as control, results from vagotomy, pneumotaxic center ablation, and brain stem transection, alone or in combination, indicate: (1) Hering-Breuer reflex controls respiratory rate and in the absence of pneumotaxic center, maintains a constant depth; (2) pneumotaxic center controls respiratory depth and in the absence of Hering-Breuer reflex, maintains a constant rate; (3) apneustic center provides maximum respiratory depth and prolonged inspiratory duration so that rate can be regulated by Hering-Breuer reflex and depth by pneumotaxic center; (4) medullary respiratory center serves as a final pathway and integration center of the impulses from the higher centers. (Author).
Author: George Paxinos Publisher: Elsevier ISBN: 0080925219 Category : Science Languages : en Pages : 150
Book Description
Work on the human brainstem has been impeded by the unavailability of a comprehensive diagrammatic and photographic atlas. In the authors' preliminary work on the morphology of the human brainstem (The Human Nervous System, 1990), Paxinos et al demonstrated that it is possible to use chemoarchitecture to establish a number of human homologs in structures known to exist in the rat, the most extensively studied species. Now, with the first detailed atlas on the human brainstem in more than forty years, the authors present an accurate, comprehensive, and convenient reference for students, researchers, and pathologists. Key Features * The first detailed atlas on the human brainstem in more than forty years * Delineated as accurately as The Rat Brain in Stereotaxic Coordinates, Second Edition (Paxinos/Watson, 1986), the most cited book in neuroscience * Based on a single brain from a 59-year-old male with no medical history of neurological or psychiatric illness * Represents all areas of the medulla, pons, and midbrain in the plane transverse to the longitudinal axis of the brainstem * Consists of 64 plates and 64 accompanying diagrams with an interplate distance of half a millimeter * The photographs are of Nissl and acetylcholinesterase (AChE) stained sections at alternate levels * Establishes systematically the human homologs to nuclei identified in the brainstem of the rat Reviewed by leading neuroanatomists * An accurate and convenient guide for students, researchers, and pathologists
Author: Pei Chin Tang
Author: Pei Chin Tang
Author: Pei Chin Tang
Author: George Paxinos
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