The Velocity of Blood Flow Is the Lowest in Capillaries

question 9

Multiple Choice

The velocity of blood flow is the lowest in capillaries because ________.

• A) the capillaries have internal valves that slow the flow of blood
• B) the diastolic blood pressure is too low to deliver blood to the capillaries at a high flow rate
• C) the systemic capillaries are supplied by the left ventricle, which has a lower cardiac output than the right ventricle
• D) the total cross-sectional area of the capillaries is greater than the total cross-sectional area of the arteries or any other part of the circulatory system

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Definitions:

Hemorrhagic Shock

A form of shock that occurs due to severe blood loss leading to inadequate oxygen delivery to the body tissues.

Weak Pulse

An indication of low blood volume or pressure, characterized by a pulse that is difficult to feel or weaker than normal.

Fluid Excess

A condition where there is an abnormal increase in bodily fluid.

Ischemic Response

A physiological reaction to reduced blood supply to tissues, leading to a shortage of oxygen and glucose needed for cellular metabolism.