Adrenocortical steroids - vertebrates, Biology

Assignment Help:

Adrenocortical Steroids - Vertebrates

The adrenal cortex secretes two types of steroid hormones:

  1. Glucocorticoids, concerned with regulation of glucose and
  2.   Mineralocorticoids, concerned with salt regulation.

This distinction between glucocorticoids and mineralocorticoids is found in mammals where as nonmammalian vertebrates do not maintain such distinction. In general the action of corticosteroids is adaptive. Salt output or retention is altered in accordance with environmental demands.

In mammals aldosterone, a mineralocorticoid is concerned with electrolytd balance. It is produced in response to adrenoeorticotropic hormone (ACTH) secreted by the pituittary. ACTH itself is released in response to a corticotropin releasing factor (CRF) from the hypothalamus. Glomerulotrophic hormone from the pineal gland is also known to stimulate aldosterone secretion. In nonmammalian vertebrates apart from aldosterone, another mineralocorticoid, cortisol is known to promote NaCl absorption. The mineralocorticoids increase the tubular absorption of sodium and promote the renal excretion of potassium.


Related Discussions:- Adrenocortical steroids - vertebrates

Prawn.., Ask question #Minimum 2o pages accepted#

Ask question #Minimum 2o pages accepted#

Name the term concerning with genetic principals of humans, Which of the be...

Which of the below refers to science concerned with the application of genetic principles to improvement of the human species? a) Eugenics b) Assortive mating c) Holandri

What is immune complex, It is a complex of antibody bound to antigen, which...

It is a complex of antibody bound to antigen, which contains complement components.

What is hipot test ?, Hipot is an abbreviation for high potential. Usually,...

Hipot is an abbreviation for high potential. Usually, Hipot is a term given to a class of electrical safety testing instruments used to confirm electrical insulation in finished ap

Enumerate the term - clinical neuroscience, Enumerate the term - Clinical n...

Enumerate the term - Clinical neuroscience Clinical neuroscience concerns the study of clinical populations both to well understand neuroanatomy and to test psychological theor

Industrial melanism, In this section, we shall discuss a classic example of...

In this section, we shall discuss a classic example of natulal selection in action. In the preceding unit, it was stated that natural selection always aims at eliminating alleles,

What mechanism of regulation utilized in maintaining, What mechanism of reg...

What mechanism of regulation is utilized in maintaining homeostatic balance of sugar?

Define physical capacity tests for aerobic capacity, Define Physical Capaci...

Define Physical Capacity Tests for Aerobic capacity? Aerobic capacity has already been defined. Aerobic capacity is usually measured using a tread mill test in which the intens

Define term population, What is a population? In Biology a population i...

What is a population? In Biology a population is a set of individuals of the similar species living in a given place and in a given time.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd