Blood flow is regulated in the human body via multiple ways. Mark each of the fo
ID: 221078 • Letter: B
Question
Blood flow is regulated in the human body via multiple ways. Mark each of the following that apply as ways via which blood flow is regulated.
___ Changes of peripheral vascular resistance associated with action of the smooth muscle surrounding many blood vessels (principally arterioles but also arteries and to a lesser extent veins) can cause those vessels to dilate or constrict in response to mechanical and/or chemical signals among others.
___ As a consequence of elasticity and compliance of vessel walls.
___ Due to the presence of valves in the veins to prevent backflow of blood. _
__ As a consequence of the heart’s ability to contract harder as it receives more blood (Starling’s law).
Explanation / Answer
a) ___ Changes of peripheral vascular resistance associated with action of the smooth muscle surrounding many blood vessels (principally arterioles but also arteries and to a lesser extent veins) can cause those vessels to dilate or constrict in response to mechanical and/or chemical signals among others.
Answer: Blood pressure
b) ___ As a consequence of elasticity and compliance of vessel walls.
Answer: Vasodilation and vasoconstriction
c) ___ Due to the presence of valves in the veins to prevent backflow of blood.
Answer: Muscle pump
d) __ As a consequence of the heart’s ability to contract harder as it receives more blood (Starling’s law).
Answer: Ventricular systole