HUMAN PHYSIOLOGY
BREATHING AND RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Dorsal
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Ventral
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Dorsal and lateral
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Ventral and lateral
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Detailed explanation-1: -This area is in the ventrolateral part of the medulla, about 5 mm anterior and lateral to the dorsal respiratory group.
Detailed explanation-2: -The medullary inspiratory center, located in the medulla oblongata, generates rhythmic nerve impulses that stimulate contraction of the inspiratory muscles (diaphragm and external intercostal muscles).
Detailed explanation-3: -The respiratory center is located in the medulla oblongata, and is composed of the dorsal respiratory group (DRG) and the ventral respiratory group (VRG).
Detailed explanation-4: -The ventral respiratory group (VRG) located in the region of the nucleus ambiguus and retroambigualis is responsible for both inspiration and expiration.
Detailed explanation-5: -The medullary respiratory centre is always under chemical control. In medulla oblongata, there is a chemosensitive area which is sensitive to carbon dioxide and pH of blood.