Adrenocortical steroids - vertebrates, Biology

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.

Posted Date: 1/16/2013 3:01:11 AM | Location : United States







Related Discussions:- Adrenocortical steroids - vertebrates, Assignment Help, Ask Question on Adrenocortical steroids - vertebrates, Get Answer, Expert's Help, Adrenocortical steroids - vertebrates Discussions

Write discussion on Adrenocortical steroids - vertebrates
Your posts are moderated
Related Questions
How to repair the defects in post myocardial ? Repair of Defect :  The approach to the defect is through ventriculotomy over the infarcted area. The defect is repaired


Define Integrity of Epithelial Tissues? Vitamin A is essential for the integrity of the mucous-secreting cells. In fact vitamin A maintains the health of epithelial cells that

Explain the Reduction in cancer risk? Different cancers, especially colon and breast cancer, has been linked not only to phytates but also to protease inhibitors. In vitro stud

detail about cytoplas

How do keep respiratory system healthy? The circulatory system supplies food and oxygen to the body's cell. It carries away waste production of energy. The wastes must then be

Obesity a health hazard: The factors of obesity are complex. Obesity is due to over eating and excess of energy intake. The obese child when grows up will be a target

Q. Explain about Rheumatic Heart Disease? Rheumatic Heart Disease (RHD) is a very common cause of cardiovascular disorder in children and adolescents in India. This disease inv

Blood from a donor is sterile and stored in a sealed bag, but it is still kept at 4°C. What is the advantage of keeping it at this low temperature?   At 4 °C, enzyme activi

Distinguish features in the mechanisms of RNA synthesis, + (RNA), (-) RNA, and ds RNA viruses.