Coordination and control – the endocrine system

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Question 4
Easy

The basal metabolic rate in the body is regulated by a negative feedback loop involving the thyroid gland.

The diagram shows how this pathway takes place.

HPT Axis Feedback Loop

Which numbers on the diagram represent the hormones TSH (Thyroid-Stimulating Hormone) and thyroxine?

1=TSH1 = \text{TSH}1=TSH and 3=thyroxine3 = \text{thyroxine}3=thyroxine

2=TSH2 = \text{TSH}2=TSH and 3=thyroxine3 = \text{thyroxine}3=thyroxine

2=thyroxine2 = \text{thyroxine}2=thyroxine and 3=TSH3 = \text{TSH}3=TSH

3=TSH3 = \text{TSH}3=TSH and 4=thyroxine4 = \text{thyroxine}4=thyroxine

Coordination and control – the endocrine system Questions

  1. GCSE
  2. /Biology
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