Blood Vessels Flashcards
Which type of blood vessel is most muscular in proportion to diameter, extremely numerous, and thus the most significant contributors of vasomotion to control peripheral resistance and flow?
arterioles
Venous valves are formed from the
tunica interna
Blood is carried to the heart by ___________, away from the heart by __________, and delivered to the tissues by ___________.
veins; arteries; capillaries
Which type of capillary is best suited for rapid absorption or filtration of small to medium sized molecules in the intestines or kidneys?
fenestrated capillaries
Blood flow into the capillary beds is regulated by
precapillary sphincters
Which of the following does NOT play a significant role in venous return?
stroke volume
Which of the following would NOT decrease the flow of blood in a vessel?
vasodilation
Low mean arterial pressure (MAP) is concerning because it will likely cause some degree of
ischemia
A patients pulse can be easily obtained on physical exam from all of the following locations EXCEPT the:
superior mesenteric artery
A low pulse pressure is concerning because it could indicate all of the following EXCEPT:
excessive arterial resistance
bleeding, vomiting, diarrhea, burns
hypovolemic shock
bacterial infection
septic shock
heart attack, arrhythmia, bad heart valves
cardiogenic shock
damage to the medulla oblongata
neurogenic shock
severe allergic response
anaphylactic shock
