Control of Blood Pressure Flashcards
what is an early indication of hypertension
kidney damage
how is arterial pressure controlled by the ANS
removes sympathetic tone
what are the 3 variables of MABP
how hard the heart is working
venous return
diameter of blood vessels
where are the carotid body receptors located?
walls of the internal carotid arteries
above carotid bifurcation
carotid sinus
where are the cell bodies of the carotid body receptors found
nodose ganglion
what are the afferent nerve fibres of the carotid body receptors
hering’s nerves to the glossopharyngeal nerve
what is another name for the IXth cranial nerve
glossopharyngeal nerve
what is the terminal of the baroreceptors
nucleus tractus solitarius of the medulla
where are the aortic baroreceptors found
walls of the aortic arch
where are the cell bodies of the aortic baroreceptors located
petrous ganglion
what are the afferent fibres of the aortic baroreceptors?
vagus nerves
Xth cranial nerves
what do the carotid body receptors detect
small changes around the normal set point
what do aortic baroreceptors detect
gross change in overall pressure
what happens when a baroreceptor is stretched?
stretched by increase in blood pressure = increase firing rate
