Endocrine system, Biology

INTRODUCTION -

Endocrinology - Study of endocrine glands, hormones and their effects.

Thomas Addison - Father of endocrinology. Described hormonal disease in 1855 known after his name as Addison's disease.

Berthold - Laid foundation of endocrinology.

Huxley called hormones as chemical messengers.

Claude Bernard called hormones a internal secretions.

Gudernatsch studied effect of thyroxine on metamorphosis of tadpole larva of frog.

Kendall prepared crystals of thyroxine.

Banting and Best isolated insulin.

Kimbell and Murlin isolated glucagon.

Karlson and Butendant coined the term pheromones.

Origin - Endocrine glands are mostly endodermal. Adrenal gland has ectodermal medulla and mesodermal cortex. In pituitary gland neurohypophysis is ectodermal while the anterior and middle lobes are endodermal. Pineal gland and hypothalamus are ectodermal.

Posted Date: 10/2/2012 6:01:02 AM | Location : United States







Related Discussions:- Endocrine system, Assignment Help, Ask Question on Endocrine system, Get Answer, Expert's Help, Endocrine system Discussions

Write discussion on Endocrine system
Your posts are moderated
Related Questions
Define about Iodine Metabolism? Now, we will very briefly study how iodine is absorbed, distributed in the body and ' excreted out. Like other nutrients, dietary iodide is eith

Q. How to investigate aortic stenosis by Exercise Testing? Exercise testing is relatively contraindicated in patients with aortic stenosis. Its diagnostic accuracy to pick up a

Explain G.I. (Gastro-Intestinal) system? A. Skeletal muscles directly control the movement of substances at the entrance of the G.I. system. B. Smooth muscles control the mo

Food Applications of Agar The bakery industry has been the largest user  of agar because of its heat- resistant gel properties. Confectionary products, such as agar jelly candi

Explain Basal Metabolism Rate (BMR) - Ageing? From age 25 years, the basal metabolism decreases by about 2 percent for each decade due to the increasing proportion of body fat

Q. In which areas of the globe is gymnosperm abundance noteworthy? These plants are the typical vegetation of cold regions like the boreal forest or taiga of the northern hemis

Define the functional properties of hydrocolloids The hydrocolloids not only have the functional properties but also have nutritional characteristics. Most polysaccharide gums

Q. Explain about Mandible? In the mandible, attached keratinized tissue normally atrophies with the underlying bone. As a result there is generally a relatively narrow band of

What Food items include in clear liquid diet -  Clear, fat free soups/broths -  Light coffee, tea (without milk or cream) -  Strained fruit juices -  Tender coconut wa

What are the Symptoms of Brown-Sequard syndrome Symptoms of Brown-Sequard syndrome usually appear after an affected individual experiences a trauma to the neck or back. First s