Anatomy & Physiology Circulatory #5

Question

Which student statement regarding the function of capillaries throughout the body requires clarification from the instructor?

Answers

  1. “Capillaries are the largest structure of the circulatory system?”
    • Rationale:

      This student statement requires clarification from the instructor as the capillaries are the smallest, not the largest, structure within the circulatory system.

  2. “The capillaries located in the lung pick up oxygen and remove carbon dioxide.”
    • Rationale:

      This statement does not require clarification as capillaries that are located within the lungs pick up oxygen and remove carbon dioxide.

  3. “Capillaries are the point at which the exchange of oxygen and waste materials occurs.”
    • Rationale:

      This statement does not require clarification as it is correct. Capillaries are the point at which the exchange of oxygen and waste materials occurs.

  4. “The thin walls of capillaries enable the exchange of nutrients to occur within the body.”
    • Rationale:

      This statement does not require clarification as the thin walls of capillaries enable the exchange of nutrients to occur within the body.

Overview

The circulatory system within the human body provides the cells with freshly oxygenated blood from the heart in addition to removing waste products from these same cells.

Explanation

Learning Outcomes

Capillaries are any of the small branching blood vessels that form a network between arterioles and venules within the human circulatory system. This is the site for gas exchange. Therefore, the student statement “Capillaries are the largest structure of the circulatory system.” requires clarification from the instructor.

Test Taking Tip

The correct choice to this question will be a false statement regarding the function of capillaries within the human body.

Video Rationale