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Adrenocortical Steroids - Vertebrates
The adrenal cortex secretes two types of steroid hormones:
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.
Cell theory exception
#questionwhy is urea the major nitrogenous excretory product..
Any elevation in BP is accompanied by increased risk of cardiovascular and cerebrovascular events and renal damage. The most distinctive pathological consequence
Q. Angiographic Findings and Interpretation? Pulmonary angiography is useful in the following clinical scenarios: 1) Pulmonary artery stenosis 2) Pulmonary arteriovenous
Absence of vesicular glands In some bulls the vesicular glands are either absent or hypoplastic also sometimes accompanied by poorly developed ampullae. A characteristic sympt
animal body organization
Endocarditis usually occurrs more frequently in men, gender derived ratios range from 1.6 to 2.5. The age specific incidence of endocarditis increased progressively after 30 years
characters of phylum protozoa
i want about superclass pisces
Define Factors Influencing RS Content of Foods? Different fractions of RS mentioned in Table may be naturally present in some foods or may be generated as a result of industria
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