Question:

Mast cells of connective tissue contain

Updated On: Jul 28, 2022
  • vasopressin and relaxin
  • heparin and histamine
  • heparin and calcitonin
  • serotonin and melanin.
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The Correct Option is B

Solution and Explanation

Mast cells are the large cells with densely granular cytoplasm that is found in connective tissues. Their granules contain histamine which is a vasodilator, heparin which is an anticoagulant and serotonin which acts as a mediator of inflammation and allergic reactions. Vasopressin is a hormone secreted by posterior pituitary gland. Calcitonin is a hormone secreted by thyroid gland. Melanin is a pigment produced by specialized epidermal cells called melanocytes. Relaxin is a hormone produced by the corpus luteum and placenta during the terminal stages of pregnancy.
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Concepts Used:

Animal Tissues

Human bodies, like most animal bodies, are made up of four different types of tissue:

Epithelial Tissue:

This tissue forms the outer layer of the body and also lines many of the body's cavities where it has a protective function.

General functions of epithelial tissue:-

  1. Provides a barrier between the external environment and the organ that it is covering.
  2. Specialized to function in secretion and absorption.
  3. Protects organisms from microorganisms, injury, and fluid loss.

Connective Tissue:

This tissue assists in the support and protection of organs and limbs and depending on the location in the body it may join or separate organs or parts of the body.

Muscle Tissue:

This tissue enables various forms of movement, both voluntary and involuntary.

Nerve Tissue:

This tissue is responsible for the carrying of electrical and chemical signals and impulses from the brain and central nervous system to the periphery, and vice versa.