control of resp Flashcards
Nervous centers in medulla and pons which transmit nervous impulses to respiratory muscles
respiratory centers
what are the 2 parts of the medullary respiratory center
dorsal resp center
ventral resp center
what is the function of the dorsal resp center
stimulate diaphragm
what is the function of the ventral resp center
stimulate intercostal and abdominal muscles
what is the function of the pontine center?
coordinates switching between inspiration and expiration
(aka pneumotaxic center (rhythm))
what is the function of the hypothalamus resp center
autonomic (unconscious) oversight
what is the function of the limbic resp center
emotional breathing responses
what is the function of the cerebral cortex resp center
voluntary control (limited)
What are the 2 types of receptors for the resp center
central and peripheral chemoreceptors
where are central chemoreceptors located
what do they respond to
medulla, hypothalamus
CO2 and H+
Where are peripheral chemoreceptors located
What nerves carry their signals
what do they respond to
Aortic and carotid bodies
vagus and glossopharyngeal nerves
CO2, H+, and O2
What is the mechanism of central and peripheral chemoreceptors to maintain homeostasis
negative feedback
