Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Juxtaglomerular Apparatus
The autoregulation of renal blood flow involves a neuroendocrine mechanism related to the juxtaglomerular apparatus in the kidney.
Figure: Structure of the juxtaglomerular apparatus in mammals
When the afferent arterial blood pressure is low, the stretch sensitive receptors of the arterioles initiate nerve impulses which induce the secretion of a proteolytic enzyme called renin by the juxtaglomerular cells into the blood. This enzyme causes the release of a decapeptide called angiotensin-I from a large globular plasma protein known as angiotensinogen. Another proteolytic enzyme from the plasma, the converting enzyme, removes two amino acids from angiotensin-I to form an octapeptide called angiotensin-II. Angiotensin-II is about 200 times more powerful than norepinephrine in its lasopressor activity. It increases the blood pressure by two mechanisms. Firstly, it acts on the smooth muscle of the arterioles and causes strong vasoconstriction. Secondly, it stimulates the secretion of aldosterone by the adrenal cortex. Aldosterone enhances the uptake of Na+ by the kidney tubules and hence causes a rise in the plasma Na+ level. This results in an increase in the extracellular fluid volume and consequently an elevation in blood pressure. Angiotensin-II is degraded by an enzyme called Angiotensinase, present in plasma.
Gluconeogenesis Gluconeogenesis is the procedure through that glucose is synthesized from smaller easier molecules such as lactate and pyruvate. Although the catabolic linear p
H yd r o p e r i c a r d i um - h e pa titi s syndrome Also known as 'Angara disease' or 'leachy heart disease', this complex illness of poultry spread rapid
Determine Health Hazards Associated with High Altitude? Abrupt exposure to altitudes greater than 10,000 ft (3050 in) elevation is frequently associated with symptoins of altit
Define Traditional Methods of Food Processing? Because food is so important to survival and most foods remain edible for only a brief period of time, people as the initial ages
Define Classification of Chromatography - Basic Separation Technique Chromatography can be classified depending upon: Physiochemical principles/factors, The techniqu
F a t cow syndrome Fat cow syndrome, also known as fatty infiltration of liver, is a highly fatal disease in high yielding dairy animals that occurs a few days before or afte
Amphibian frog embryo
Q. What are the lichens? How fungi participate in this ecological interaction? Lichens are formed by mutualist ecological interaction between algae and fungi or between fungi a
General Characteristics of Protozoans The protozoans, are eukaryotes that form a group of about 80,000 single-celled organisms under the kingdom Protista. The unicellular leve
What is the Speech Perception Test The subject is asked to listen to a series of 60 sounds, each of which consists of a double e digraph with varying prefixes and suffixes. The
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd