Medical Surgical Renal Anatomy & Physiology #1

Question

Which is the functional unit of the kidney?

Answers

  1. Bowmans’ capsule
    • Rationale:

      This answer is not correct because Bowman’s capsule performs the first step in filtering the blood into urine. The capsule is a part of the nephron, but not the nephron.

  2. Collecting duct
    • Rationale:

      This answer is not correct because the collecting duct collects urine from the functional unit of the kidney, the nephron. The nephron is the functional unit of the kidney.

  3. Glomerulus
    • Rationale:

      This answer is not correct because the glomerulus is a filter for the nephron and a nephron tubule. The glomerulus filters the blood while the tubule removes waste and restores needed substances to the blood.

  4. Nephron
    • Rationale:

      This answer is correct because the nephron is the functional unit of the kidney. The nephron produces urine while removing waste plus other excess substances from the client’s blood.

Overview

The nephron is the functional unit of the kidney. Each kidney contains approximately 1,000,000 nephrons.

Explanation

Learning Outcomes

The nephron is the functional unit of the kidney. The nephron produces urine while removing waste plus other excess substances from the client’s blood. The nephron has a filter called the glomerulus and a nephron tubule. The glomerulus filters the blood while the tubule removes waste and restores needed substances to the blood.

Test Taking Tip

Read each question carefully and devise the answer in your mind first, then look at the answer options to decide which answer fits what you devised in your mind. Be sure to always eliminate wrong answers immediately.

Video Rationale