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

Subtropical rain forests - ecosystem, Subtropical rain forests - Ecosystem ...

Subtropical rain forests - Ecosystem In regions of fairly high rainfall but less temperature differences between winter and summer and broad-leaved evergreen subtropical biome

Phosphorus (p) - macronutrients, Phosphorus (P) - Macronutrients In so...

Phosphorus (P) - Macronutrients In soil, phosphorus occurs almost exclusively in the form of orthophosphate. Substantial amount of P is associated with the soil organic matter

Explain atrial pressure, Q. Explain Atrial Pressure? The RA pressure wa...

Q. Explain Atrial Pressure? The RA pressure wave form has three positive deflections - "a", "c", and "v" waves. The "a" wave is due to atrial systole and follows the P-wave on

What is fenugreek seeds, Q. What is Fenugreek seeds? Fenugreek seeds: '...

Q. What is Fenugreek seeds? Fenugreek seeds: 'Commonly known as methi seeds in Hindi. They are commonly used in Indian cuisine in chutney and even in pickles and several dishes

Assessment of tubercular meningitis, Assessment   For assessment of cli...

Assessment   For assessment of clinical manifestation of the disease you need to understand three stages of clinical course of the disease which are as follows:  Prodromal

Thumb rule for dietary management, Q. Thumb rule for dietary management? ...

Q. Thumb rule for dietary management? The thumb rule for dietary management is to advice the patient to try to cut down or avoid:  Red meats. Organ meats such as br

Which are the specialized conductive tissues of the plants, Which are the s...

Which are the specialized conductive tissues of the plants? The vascular tissues of the plants are the xylem and the phloem. Xylem is the plant tissue that forms the vessels t

Class of crustacea - ostracoda, Class of Crustacea - Ostracoda General...

Class of Crustacea - Ostracoda Generally called mussel or seed-shrimps, Ostracoda include both fresh water and marine forms. The small crustaceans, computing a few mm have the

What are the main gas exchange organs of the plants, What are the main gas ...

What are the main gas exchange organs of the plants? How is the process accomplished? In the covering of the leaves and of the primary structure of the stem gas exchange is mad

Characteristic features of avian gastrulation, Characteristic Features of A...

Characteristic Features of Avian Gastrulation Creation of hypoblast and its important role in formation of the axis and orientation of embryo. Existence of the cells

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