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

Explain about podophyllum, Q. Explain about Podophyllum? These species ...

Q. Explain about Podophyllum? These species were long used by indigenous people in Americea and Asia, including for the treatment of skin cancers and warts. The combination of

Describe steps of indications definitive surgical treatment, Describe steps...

Describe steps of Indications definitive Surgical Treatment? Indications for Definitive Surgical Treatment :  Surgery is indicated in all acute proximal dissections. Ind

Explain the nervous system characterized in echinoderms, How are the symmet...

How are the symmetry and the nervous system characterized in echinoderms? Adult echinoderms, with cnidarians, are the animals that present radial symmetry, i.e., their body str

Explain what is aortic arch aneurysm, Explain what is Aortic Arch Aneurysm ...

Explain what is Aortic Arch Aneurysm ? Aortic Arch Aneurysm :  Hypothermic circulatory arrest and retrograde cerebral perfusion is the most commonly used technique for

Define classification of foods based on ph, Define Classification of foods ...

Define Classification of foods based on pH? Of these, the nature of the food, primarily the pH of food, is the most significant determinant of how severely the food will be pro

Connecting implants to natural teeth, Connecting implants to natural teeth ...

Connecting implants to natural teeth and use as pier abutments The issue of connecting implants and teeth to support a fixed prosthesis is controversial and unresolved. The inh

What is surviving implants, Compromised health or 'surviving' implants ...

Compromised health or 'surviving' implants The features or clinical conditions which are representative of this group are: i) No pain in the implant site upon function ii

Evolutionary innovation presented by nematodes, Q. What is the major evolut...

Q. What is the major evolutionary innovation presented by nematodes? What is the benefits of that innovation? The major evolutionary innovation of nematodes is the complete dig

Regulation of kidney function, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Explain strengthening the public health measures - anaemia, Explain Strengt...

Explain Strengthening the public health measures? Parasitic infestations and protozoal infections cause iron deficiency through loss of blood or destruction of red blood 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