Flashcards in Physiology Deck (11):
Short term regulation of BP
1st is peak systolic pressure
Last sound is heard at minimum diastolic pressure. DIASTOLIC PRESSURE IS RECORDED AS THE FIFTH KOROTKOFF SOUND
Right atrium pressure
Main driving force for blood is the MAP
Minimal MAP needed to perfuse brain, arteries and kidneys?
Volume of blood umped by each ventricle of the heart per minute
The major resistance vessels?
Where are the baroreceptors?
Aortic arch and carotid sinus
(carotid signals via IXth CN)
(aortic signals via CNX)
Important in moment to moment regulation of arterial blood pressure including prevention of postural changes
What causes postural hypotension?
Results from failure of baroreceptor responses to gravitational shifts in blood, when moving from horizontal to vertical position