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Category Archives for "Endocrinology"

Endocrinology is the study of Hormones. This category includes Structure, classification, function and its mechanism.

Insulin: Pancreatic Peptide Hormone -2

This is the continuous part of “Peptide hormone: Pancreatic secretions-1“. This chapter explains the second pancreatic hormone Insulin structure, biosynthesis, mechanism and Functions. Pancreatic Hormone – Insulin: Structure: In 1926, “ABEL” isolated crystalline insulin from pancreas. Insulin (insulaL =island) was first isolated in 1922 for the pancreas of dogs by Banting & Best of the […]

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  • Updated May 2, 2016

Peptide hormones: Pancreatic secretions – 1

The pancreas was first identified for western civilization by Herophilus (335–280 BC), a Greek anatomist and surgeon. Only a few hundred years later, Rufus of Ephesus, another Greek anatomist, gave the pancreas its name. The pancreas secrets three different peptide hormones. They are Insulin, Glucagon and Stomatostatin. Anatomy of Pancreas: The pancreas (from pankreas: panG=all, […]

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  • Updated December 2, 2015

Gastro Intestinal Hormones: Controls Digestive system

The digestion and absorption of nutrients is a complicated process which is regulated by the automatic nervous system. This occurs in association with peptide hormones of Gastro-Intestinal Tract (GIT). The specialized cells lining the Gastro Intestinal Track are responsible for the production of Gastro Intestinal hormones. Hence Gastro Intestinal Track may be considered as the largest mass […]

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  • Updated July 15, 2019

Hormone is the basic chemical messengers

The term Hormone (hormaoG= to excite) was first used by ‘William M.Bayliss’ and his brother-in-law ‘Ernest H.Starling’, both of London University college, in 1904, who showed that a chemical stimulate the action of a pancreatic secretion. These substances were then called “Chemical Messengers”. What are Hormones: According to “Went & Thimann” (1937), “A substance which […]

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  • Updated January 19, 2017

What are Neurotransmitters and Neuroactive Peptides

Communication of information between neurons is accomplished by movement of chemicals across a small gap called the “synapse”. Chemicals, called neurotransmitters, are released from one neuron at the pre-synaptic nerve terminal. Neurotransmitters then cross the synapse where they may be accepted by the next neuron at a specialized site called a “Receptor“. The action that […]

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  • Updated January 19, 2017