EXPH 386 WVU Exam 4- Questions
And Detailed Solutions |2026 Update|
Graded A+ Pass!!|Verified
5 important functions of CV system - Ans--1. Deliver O2 to active tissues
2. Return Deoxy blood to lungs
3. Transports heat, by-product of cellular metabolism, from core to skin
4. Delivers fuel nutrients to active tissues
5. Transports hormones
The heart is a duel pump T/F - Ans--T
Pulmonary Circulation - Ans--Between the heart and the lungs. Carries
deoxy blood away from heart to the lungs and then returns oxygenated
blood back to heart.
Systemic circulation - Ans--Between the heart and the rest of the body.
Carries oxygenated blood from the heart to the body and then returns
deoxygenated blood back.
Function of the heart - Ans--Pump blood
Passive filling of ventricles - Ans--Governed by pressure gradients. ~90%
Active filling of vetricles - Ans--Atrial contraction. ~7% at rest
Pipes of CV system - Ans--Arteries
Arterioles
Capillaries
Venules
Veins
Arteries - Ans--thick walled, high pressure
smooth muscle and endothelial cells
, Arterioles - Ans--smaller arteries. constrict or relax changing the resistance
to blood flow. Also contain smooth muscle
What is the other name for arterioles? - Ans--resistance vessels
Venules - Ans--small veins that collect deoxy blood from capillaries
capillaries - Ans--* single layer of endothelial cells line capillary wall
* NO smooth muscle
* Reduces diameter to allow only one blood cell
*Increased pressure
Whats the name of the branch off the arteriole where the capillary is about to
begin? - Ans--metarteriole
Veins - Ans--Thin walled, low pressure
Smooth muscle and endothelial cells (< arteries)
act as blood reservoir (hold 64% of blood at rest)
% blood at rest:
Heart?
Arteries?
Arterioles/capillaries?
Veins?
Pulmonary? - Ans--7%
13%
7%
64%
9%
What do the valves in the veins do? - Ans--Allow the blood to flow in one
direction toward the heart because the BP is low in the veins
How does blood make it back to the heart from the body? - Ans--The venous
system has valves which prevent backflow of blood. There is also a milking
action that propels the blood back to the heart.
And Detailed Solutions |2026 Update|
Graded A+ Pass!!|Verified
5 important functions of CV system - Ans--1. Deliver O2 to active tissues
2. Return Deoxy blood to lungs
3. Transports heat, by-product of cellular metabolism, from core to skin
4. Delivers fuel nutrients to active tissues
5. Transports hormones
The heart is a duel pump T/F - Ans--T
Pulmonary Circulation - Ans--Between the heart and the lungs. Carries
deoxy blood away from heart to the lungs and then returns oxygenated
blood back to heart.
Systemic circulation - Ans--Between the heart and the rest of the body.
Carries oxygenated blood from the heart to the body and then returns
deoxygenated blood back.
Function of the heart - Ans--Pump blood
Passive filling of ventricles - Ans--Governed by pressure gradients. ~90%
Active filling of vetricles - Ans--Atrial contraction. ~7% at rest
Pipes of CV system - Ans--Arteries
Arterioles
Capillaries
Venules
Veins
Arteries - Ans--thick walled, high pressure
smooth muscle and endothelial cells
, Arterioles - Ans--smaller arteries. constrict or relax changing the resistance
to blood flow. Also contain smooth muscle
What is the other name for arterioles? - Ans--resistance vessels
Venules - Ans--small veins that collect deoxy blood from capillaries
capillaries - Ans--* single layer of endothelial cells line capillary wall
* NO smooth muscle
* Reduces diameter to allow only one blood cell
*Increased pressure
Whats the name of the branch off the arteriole where the capillary is about to
begin? - Ans--metarteriole
Veins - Ans--Thin walled, low pressure
Smooth muscle and endothelial cells (< arteries)
act as blood reservoir (hold 64% of blood at rest)
% blood at rest:
Heart?
Arteries?
Arterioles/capillaries?
Veins?
Pulmonary? - Ans--7%
13%
7%
64%
9%
What do the valves in the veins do? - Ans--Allow the blood to flow in one
direction toward the heart because the BP is low in the veins
How does blood make it back to the heart from the body? - Ans--The venous
system has valves which prevent backflow of blood. There is also a milking
action that propels the blood back to the heart.
