Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332



Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem

Secretion of _______ suppresses immune responses.

  1. a. melatonin
  2. b. antidiuretic hormone
  3. c. thyroid hormone
  4. d. cortisol

Summary Introduction

Introduction: Immune responses are the group of responses produced when an antigen enters our body. One hormone known as cortisol produced in the cortex region of the adrenal gland suppresses the immune response produced by our body in response to an antigen.


Reason for the correct answer:

Cortisol is released by the adrenal gland during stressed condition. Our body produces inflammatory reaction during an antigen encounter that leads to inflammatory related pain. During chronic pain and inflammation, doctors prescribe medicine containing cortisone and later it converts into cortisol hormone by our cells.

Option d. is given as “Cortisol”.

Hence, the correct answer is option d.

Reasons for the incorrect answers:

Option a. is given as “Melatonin”.

This is incorrect because melatonin hormone is produced by our brain to regulate the sleep-wake cycle. They are not involved for suppressing the immune responses.

Hence, option a...

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