Anatomy & Physiology Genitourinary #15

Question

Which structure manages the pressure differences that move fluids and molecules across a membrane?

Answers

  1. Nephron
    • Rationale:

      A nephron is the primary functional cell of the kidney and the renal system as a whole; however, it is not specifically responsible for managing the pressure differences that move fluids and molecules across a membrane.

  2. Renal cortex
    • Rationale:

      The renal medulla is the inside portion of the kidney; however, it is not specifically responsible for managing the pressure differences that move fluids and molecules across a membrane.

  3. Renal medulla
    • Rationale:

      The renal cortex is the outer layer of the kidney; however, it is not specifically responsible for managing the pressure differences that move fluids and molecules across a membrane.

  4. Loop of Henle
    • Rationale:

      The loop of Henle is part of a kidney tubule that forms a long loop in the medulla of the kidney. It is the structure responsible for the reabsorption of salts and water into the blood.

Overview

One of the primary functions of the renal system is maintaining the body’s fluid balance.

Explanation

Learning Outcomes

Specific structures located within the kidney play important roles in the maintenance of fluid balance. The loop of Henle is one such structure. Located within the nephron, the loop of Henle manages pressure differences allowing fluids and molecules across a cell membrane to maintain optimal fluid balance.

Test Taking Tip

Consider the function of each choice to answer this question correctly.

Video Rationale