What is an evolutionary explanatory hypothesis, Biology

Assignment Help:

Q. What is an evolutionary explanatory hypothesis for the secretion by the heart of a hormone that regulates the renal function? Which is that hormone?

The renal regulator hormone secreted by the heart is the atrial natriuretic factor or ANF. The ANF increases the excretion of sodium in the nephron tubules causing less resorption of water more urinary volume and thus lowering the blood pressure. The atrial natriuretic factor is secreted when there is a raise of the length of the heart muscle fibers in response to high blood pressure. The ANF is a natural antihypertensive substance since the health of the heart depends largely upon the stability of the normal blood pressure the evolution should have preserved the atrial natriuretic factor to allow information from the heart to be an additional mechanism for the renal control of the blood pressure.


Related Discussions:- What is an evolutionary explanatory hypothesis

How to calculate hydrogen ion concentration, Q. How to calculate Hydrogen I...

Q. How to calculate Hydrogen Ion Concentration? Ans. The hydrogen ion concentration has a significant role to play in growth of bacteria as every microorganism has a minim

Drugs for sexually transmitted infections, Drugs for Sexually Transmitted I...

Drugs for Sexually Transmitted Infections Many infections can be transmitted during sexual contact. The text and tables that follow are limited to management of sexually transm

Aortic regurgitation by cardiac catheterization, Q. Aortic regurgitation by...

Q. Aortic regurgitation by Cardiac Catheterization? Often cardiac catheterization is not indicated as reliable information for management decision making can be obtained throug

Hydropericardium-hepatitis syndrome, H yd r o p e r i c a r d i...

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

Viral diseases, Nature of viral diseases Viral diseases are manifested...

Nature of viral diseases Viral diseases are manifested in acute, sub-acute or chronic forms, as frank clinical cases or as latent infections, some of which are fatal. These di

State in detail about the thylakoid membrane, State in detail about the thy...

State in detail about the thylakoid membrane The thylakoid membrane contains all the factors associated with the photosynthetic electron transport leading to the generation of

Explain why this drug would eventualy kill a person, Dinitrophenol, DNP, wa...

Dinitrophenol, DNP, was prescribed in low doses in the 1940's to help obese patients lose weight. It's use for this purpose was discontinued when several users died. DNP makes the

Enumerate about the baule unit, Enumerate about the Baule unit  A mathe...

Enumerate about the Baule unit  A mathematician from Gottingen by the name of B. Baule assisted Mitscherlich with his calculations.  The quantity of any growth factor (nutrient

Explain management strategies for genetically modified crops, Explain Manag...

Explain Management strategies for genetically modified crops? Crops that have been genetically modified (GM) to be toxic to insect pests are now common in US agriculture. Make

Define disadvantages of direct microscopic count, Define Disadvantages of D...

Define Disadvantages of Direct Microscopic Count? 1. Small cells are difficult to see under the microscope and may be missed. 2. It gives total count, i.e., both live and de

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd