Endocrine system, Biology

Assignment Help:

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.


Related Discussions:- Endocrine system

Chest x-ray, Increase in cardio-thoracic ratio is a relatively specific ind...

Increase in cardio-thoracic ratio is a relatively specific indicator of left ventricular end-diastolic volume. Left atrial enlargement is seen as double density shadow, lifting up

Roles of abscisic acid, Roles of Abscisic Acid Abscisic acid (ABA) is ...

Roles of Abscisic Acid Abscisic acid (ABA) is a particularly interesting hormone with regard to the regulation of its own levels. Its levels rise and fall dramatically in seve

Explain about the intestinal calcium absorption, Explain about the Intestin...

Explain about the Intestinal calcium absorption? Intestinal calcium absorption is mainly controlled by the serum concentration of 1, 25- (OH) 2 D as discussed above. The activi

Explain positive staining technique, Explain Positive Staining Technique? ...

Explain Positive Staining Technique? Here, a stain has a positively charged chromophore that gets attached to the negatively charged outer surface of the microbial cell and thu

Metabolic aberrations and symptoms, Q. Metabolic Aberrations and Symptoms? ...

Q. Metabolic Aberrations and Symptoms? We all know that insulin exerts an important role in the maintenance of normal blood glucose levels through its effect on the metabolism

Amoeba, figure of contractile vacuole of amoeba

figure of contractile vacuole of amoeba

Why is ph regulation important for living beings, Why is pH regulation impo...

Why is pH regulation important for living beings? How do mineral salts participate in this regulation? The potential of hydrogen (pH) is a measure of the amount of hydrogen ion

What is the formula is to determinate such number?, Considering the indepen...

Considering the independent segregation of all factors, how many types of gametes does a VvXXWwYyzz individual produce? What is the formula is to determinate such number? The m

Define methods of quantitative analysis and colorimetry, Define Methods of ...

Define Methods of Quantitative Analysis and Colorimetry? Many methods of quantitative analysis are based upon the production of coloured solutions in such a way that the intens

What are the types of neurons, According to the function of the transmitted...

According to the function of the transmitted neural impulse which are the types of neurons? How different are the concepts of afference and efference of the neural impulse transmis

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