Why are systemic veins and venules called "blood reservoirs"?
A) The branches of veins grow larger and larger as they near the heart.
B) The total length of blood vessels in the body is about 60,000 miles.
C) The normal amount of blood pumped is 4 to 6 L in 1 minute.
D) They house approximately 60% of the body's blood volume at rest.

Question

Quizplus · Accepted Answer

Systemic veins and venules are referred to as "blood reservoirs" because they contain the majority of the body's blood volume at any given time, especially when the body is at rest. This allows for a rapid mobilization of blood to other parts of the body when needed, such as during exercise or in response to blood loss.

Why Are Systemic Veins and Venules Called "Blood Reservoirs