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Excretion as an Example of Homeostatic Control

The nephron

  • 1 thing to know
  • Components 01 and 03

Overview

Bowman's capsule and the glomerulus, the afferent and efferent arterioles, and what the proximal convoluted tubule, loop of Henle, distal tubule and collecting duct each do.

What you need to know

Answer each one before you reveal it.

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Key term

What is the glomerulus?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Name the cup-shaped structure that surrounds the glomerulus in a nephron.

    Model answer

    Bowman's capsule.

  2. 2

    Describe the structure and location of the Bowman's capsule.

    Model answer

    The Bowman's capsule is a cup-shaped structure surrounding the glomerulus, located in the cortex.

  3. 3

    What is the glomerulus?

    Model answer

    The glomerulus is a knot of capillaries within the Bowman's capsule where ultrafiltration occurs.

  4. 4

    How do the diameters of the afferent and efferent arterioles compare?

    Model answer

    The afferent arteriole has a wider diameter than the efferent arteriole.

  5. 5

    How does the difference in diameter between afferent and efferent arterioles affect the glomerulus?

    Model answer

    It creates high hydrostatic pressure in the glomerulus.

  6. 6

    Which part of the nephron is the main site of selective reabsorption?

    Model answer

    The proximal convoluted tubule.

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