Maintaining internal environments

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Question 3
Medium
a.

The volume and concentration of a person's urine is regulated by homeostatic mechanisms to keep the blood concentration constant.

Complete the sentences below to describe how the body responds to a person drinking a large volume of water.

Use the words in the list:

  • ADH
  • insulin
  • glucagon
  • hypothalamus
  • medulla
  • pituitary gland

If a person has consumed a large volume of water, the concentration of the blood decreases.

This is detected by receptors in the ............................. .

These receptors send a message to the ............................. .

This causes less ............................. to be released into the bloodstream.

[3]
b.

Give one factor, other than high water intake, that could cause a person to produce a large volume of dilute urine.

[1]
c.

Diabetes mellitus is a condition where a person's blood glucose concentration is very high, leading to glucose passing out in the urine.

Describe a chemical test that could be used to determine if a patient's urine contains glucose.

[3]

Maintaining internal environments Questions

  1. GCSE
  2. /Biology
  3. /Maintaining internal environments