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!
Define Regulation and Excretion of sodium and chloride?
Renal excretion and retention of these elements is closely regulated. The total content of body sodium especially the concentration in the extracellular fluid (ECF) is under homeostatic control. Let us see how body regulates Na content in ECF. Of the total Na filtered through the glomeruli, over 99% is reabsorbed by the kidney tubules. A large proportion of this reabsorption takes place in the proximal tubule, but the final adjustment is achieved by the cells of distal tubules and collecting ducts. When the need for sodium by the body increases, several mechanisms such as decreased arterial volume, low blood pressure, decreased sodium at distal tubular exchange site, low plasma levels of sodium alert kidney. In response, specialized tissue of renal cortex release renin in the blood. Renil1 converts pro-hornlolie angiotensinogen secreted by liver to angiotensin TI.
This, in turn, stimulates the adrenal cortex to produce aldosterone, which increases sodiuin re-absorption. The accompanying water retention helps, lo normalize the arterial volume thereby suppressing further sellin production. You must remember here that the regulation of chloride is achieved indirectly through sodium regulation. We need to read further to understand the details of potassium. As observed for sodium, the maintenance of K balance also depends on the kidney. Unlike sodium, the transport of K is bi-directional during the passage of the filtrate through nephron. In the proximal tubule and loop of Henle, major portion of filtered K is reabsorbed. In the distal tubule, it can be reabsorbed from the filtrate or can be secreted into it depending on the body's need. Aldosterone acts reciprocally on Na and K. You have just seen that this hormone stimulates Na reabsorption, but it accelerates the secretion of K and thus increases its excretion. Other factors that increase K excretion are increased serum K+ concentration and alkaline pH.
Explain the Decolourizing Agent - Stain Technique? 95% ethanol is used as a decolourizing agent. It has two functions - (1) It acts as protein - dehydrating agent, and (2
Q. Why does thermal inversion increases air pollution? What harm can thermal inversion cause to humans? The Thermal inversion confines at low altitude a layer of pollutants tha
Silver point: - Uses of silver point: ease of handing and placement, ductility, radiopacity,and have some antibacterial activity. - Lack of acceptable 3D seal of the ca
What is the window phase of an infection? How is this concept important for the test of HIV infection in blood banks? The primary immune response of the body facing any infecti
Dopamine is important for working memory and drug that increases the level of dopamine in the brain or facilities the action of dopamine, enhances working memory capabilities.Dopam
Aesthetic and Recreational Significance - Wildlife Many wild species are a source of beauty, wonder; joy, and recreational pleasure for large number of people. Observing leave
Determine the purposes of vital signs The vital signs reflect the functioning of vital organs of the body i.e. heart, brain and lungs. They indicate the basic functions of body
features of phylum platyhelminths
Increase in population size is known as population growth. It depends upon number of persons added to the population and number of persons lost from the population. Addition in pop
what are the function of nucleus
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd