Endocrine glands - kidney, Biology

Assignment Help:

KIDNEYS -

Origin. They develop from the mesoderm of the embryo.

The kidneys secrete three hormones: renin, erythropoetin and calcitriol.

(i) Renin. Whenever the rate of ultrafiltration falls, the cells of their juxtaglomerular complex secrete and release into blood a compound named renin.

It acts upon a plasma-protein, angiotensinogen, separating a compound, called angiotensin-II from it.

Angiotensin-ll accelerates heart beat and contract arterioles, thereby increasing blood pressure.

(ii) Erythropoietin. The oxygen shortage stimulates the kidney cells to secrete a hormone named erythropoietin into the blood. Erythropoietin stimulates the bone marrow to increase the production of RBCs.

(iii) Calcitriol. Vitamin D exists in two forms: calciferol or D and cholecalciferol or D .

Calcitriol is the active form of vitamin cholecalciferol (D ). It promotes absorption of Ca2+ and phosphorus in the small intestine and accelerates bone formation.


Related Discussions:- Endocrine glands - kidney

Taxonomy, what arachnid is beneficial

what arachnid is beneficial

What are the clinical symptoms of typhoid, Clinical symptoms of typhoid are...

Clinical symptoms of typhoid are: 1.  Graded fever which follows an upward  ladder pattern. 2.  Abdominal pain, cramps and diarrhoea. 3.  Anorexia and vomiting. 4.  In

Somatic embryogenesis, Somatic Embryogenesis The process of embryo de...

Somatic Embryogenesis The process of embryo development is called embryogenesis. It is not the monopoly of the egg to form an embryo. Any cell of the female gametophyte (Embr

Define the features of phylum nematoda, Define the Features of Phylum Nemat...

Define the Features of Phylum Nematoda? Phylum characteristics of Nematoda which are the world's most abundant multicellular organisms are as follows: 1. Nematodes occur in

What is pulse rate, Pulse Each time the left ventricle contracts and fo...

Pulse Each time the left ventricle contracts and forces blood into the aorta, it expands to adjust additional blood. And blood already present is pushed to other section and al

Main prophylactic measures against schistosomiasis, What are the main proph...

What are the main prophylactic measures against schistosomiasis? The main measures to stop schistosomiasis are: information for infected individuals to look for treatment and t

Strain of fusarium moniliforme, Q. Strain of Fusarium moniliforme? It w...

Q. Strain of Fusarium moniliforme? It was first obtained from a strain of Fusarium moniliforme isolated from southern leaf blight- damaged corn seed as a water soluble toxin.

Discuss important factor of obesity, Discuss important factor of obesity ...

Discuss important factor of obesity Weight is a most important factor for identifying obesity. Weight is measured in kilograms (kg). It is measured during the first visit and n

Clinical manifestations of bronchial asthma, Clinical Manifestations C...

Clinical Manifestations Can be chronic to acute, mild to severe. Acute attack often occur at night. During an acute attack, audible inspiratory and expiratory wheezing. Patie

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