Hormones of pancreas, Biology

Assignment Help:

HORMONES OF PANCREAS AND THEIR ROLE -

(i) Glucagon (Secreted by a-cells)

  • It stimulates the liver to convert stored glycogen into glucose.
  • Glucagon is controlled by feedback in accordance with the level of glucose in the blood. When the blood sugar rises, the secretion of glucagon is suppressed and when it drops, the secretion of glucagon is stimulated.

Target Cells. Glucagon acts on the cells of the liver and adipose tissue.

(ii) Insulin (Secreted by b-cells)

  • It was first prepared / found by Benting and Best.
  • A. F. sanger coined the term insulin & proposed the molecular structure of insulin (cow's insuline)
  • Human insulin was synthesized by "Tsan".
  • Insulin was the first protein that was artificially synthesized in laboratory and is crystallized.
  • One molecule of insulin is made up of 51 amino acids that has 2 chains - (i) a-chain. It is made up of 21 aminoacids.

(ii) b-chain. It is made up of 30 amino acids. Both the branches or chains are bind together with cross bonds of disulphide bonds.

(iii) Somatostatin (SS)

It regulates the secretion of insulin and glucagon.

Target Cells. Both somatostatin and pancreatic polypeptide act on the cells of the pancreas.

(iv) Pancreatic Polypeptide (PP).

It appears that pancreatic polypeptide inhibits the release of digestive' secretion of the pancreas.

Both somatostatin and pancreatic polypeptide are relatively newly discovered hormones of the pancreas, and both are still being studied.


Related Discussions:- Hormones of pancreas

Interaction of pyridoxine with ascorbic acid and leucine, Define Interactio...

Define Interaction of pyridoxine with Ascorbic acid and Leucine? Ascorbic acid: Vitamin B 6 metabolism increases with. Higher levels of vitamin C intake. Whole blood a

Show characteristics of food products, Q. Show characteristics of food prod...

Q. Show characteristics of food products? These sensory characteristics of food products. Food quality, as such, can be divided into three main categories i.e. i. Appeara

Define the chemical equation of the formation of bicarbonate, Q. What is th...

Q. What is the chemical equation of the formation of bicarbonate from water and carbon dioxide? What is the enzyme that catalyzes this reaction? The chemical equation of the ch

Aibp-utilization of alternate feed resources, Utilization of Alternate Feed...

Utilization of Alternate Feed Resources Use of alternate feed resources is one of the potential areas for augmenting feed resource base in the country. However, the use of NCF

What are the physiological systems, What are the physiological systems know...

What are the physiological systems known as integrative systems? Why is this designation justified? The integrative systems are the nervous system and the endocrine system. The

Which dsdna is imprtant for dna purification, Which of the following proper...

Which of the following properties of dsDNA is imprtant for DNA purification? A. Hydrophilic B. Positively charged phosphate backbone C. Can only bind to divalent cations

Uterine torsion, Uterine Torsion Incidences of uterine torsions in cat...

Uterine Torsion Incidences of uterine torsions in cattle and buffaloes are not common. However, they are very common in heavy breeds and buffaloes and animals in slopy terrain

Define about the food effects on drug metabolism, Define about the Food Eff...

Define about the Food Effects on Drug Metabolism? The general tendency of the process of metabolism is to transform a drug from a lipid- soluble to a more water-soluble compoun

2-dimensional echocardiography constrictive pericarditis, Q. 2-Dimensional ...

Q. 2-Dimensional Echocardiography constrictive pericarditis? Thickened pericardium can be detected. In about a third of patients there will be associated some degree of perica

Determine the theory of evolution, What is the problem that the theory of e...

What is the problem that the theory of evolution and its rival theories try to solve? The problem that the theory of evolution, or simply evolution, and its rival theories try

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