Blood flow is regulated in the human body via multiple ways

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).

Solution

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