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.
Q. Explain diffrent type of Mycotoxins? Mycotoxins are secondary metabolites produced by molds on foodstuffs that cause illness or death when ingested by man or animals. The pr
Carbohydrate characteristic chemical features include: Select one: a. the potential to form multiple hydrogen bonds. b. the existence of one or more asymmetric centers.
Strategies for genetic characterization and conservation - During last 20 years concerted efforts have been made to create awareness among all the developmental organizations in th
what are the names of karyotypes?
who proposed the trinominal nomenclature
Enzymes and recombinant DNA technology Recombinant DNA technology, also called as genetic engineering makes use of a variety of enzymes, particularly restriction endonucleases
Total Fertility Rate Total fertility rate (TFR) is the total number of children a women can be expected to bear in a given population if birth rates are constant for at least
Little lipophilic (lipid-soluble) hormones distribute across the plasma membrane and then interact with intracellular receptors in the nucleus/cytosol. The receptor
Q. What is Ocean shorelines? Ocean shorelines include rocky coasts and sandy beaches that are particularly rich in diverse life forms. Rocky shorelines support a diversity of o
why left brain controls right side of the body and right brain controls left side of the body....?????
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