PHYSIOLOGY OF CIRCULATION Flashcards
what is blood flow?
the volume of blood flowing through a vessel, an organ.
what is the unit measure of the blood flow?
Ml/Mn
what are the 3 important sources of resistance?
-Blood viscosity
-Total blood vessel length
-Blood vessel diameter
what are the major determinants of peripheral resistance?
Small-diameter arterioles
If pressure increases, blood flow———-
speeds up
if resistance increases, blood flow—–
decreases
what is perfusion?
blood flow through a tissue or an organ
what is blood flow regulation?
The velocity of the blood flow changes
what are the 4 parts of the aorta?
- Ascending Aorta
- Aortic Arch
- Descending Aorta
- Abdominal Aorta
- Celiac Trunk
what are the 3 major branches of the aortic arch?
Brachiocephalic
Left common carotid artery
Left subclavian artery
draining
veins
supply
arteries
The brain drains mostly into what?
The dural venous sinus
From the digestive organs and the spleen is——–
all blood
What supplies 80% of the brain?
The internal carotids
