Dictionary > Thyrotroph

Thyrotroph

Definition
noun, plural: thyrotrophs
The cell in the anterior pituitary that particularly releases thyroid-stimulating hormone
Supplement
The pituitary gland is the master endocrine gland of the endocrine system. It is responsible for the production and the release of different hormones that regulate various physiological processes. The pituitary gland is comprised of the anterior and the posterior pituitaries bordered by pars intermedia. The anterior pituitary is the glandular portion and release hormones that regulate growth, reproduction, lactation, and stress. There are about five types of hormone-secreting cells in the anterior pituitary classified based on the hormones that they produce and secrete: (1) somatotrophs, (2) corticotrophs, (3) thyrotrophs, (4) gonadotrophs, and (5) lactotrophs.
Thyrotrophs are the cells in the anterior pituitary that release thyroid-stimulating hormone (TSH). They constitute about 3 to 5 % of the anterior pituitary cells. Thyrotrophs release TSH in response to thyrotropin releasing hormone (TRH) produced by the hypothalamus. TSH is a glycoprotein hormone that works by stimulating the thyroid to produce and release thyroid hormones, particularly thyroxine. One of the functions of thyroxine is to serve as a precursor of triiodothyronine, the active form of thyroid hormone.
Also called:

  • thyrotropic cell
  • thyrotrope

See also:

  • anterior pituitary
  • hormone
  • endocrine system


    You will also like...

    Human Nervous System
    The Human Nervous System

    The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..

    New Zealand Fauna
    New Zealand’s Unique Fauna

    This lesson presents some of the unique fauna, especially endemic birds, insects, frogs, reptiles, and mammals, with the..

    Carbohydrates, fats and proteins - dietary sources
    A Balanced Diet – Carbohydrates and Fat

    Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..

    Plant meristem
    Plant Meristems and Growth

    In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..

    Structural depiction of catalase, an enzyme
    Protein Activity and Cellular Metabolism

    Proteins have a crucial role in various biological activities. Get to know how proteins are able to perform as enzymes, ..

    Stem
    Stems

    Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..