Thymus, Biology

Assignment Help:

THYMUS -

It is derived from the endoderm of the embryo.

Structure. The thymus gland is located in the upper part of the thorax near the heart. It is a soft, pinkish, bilobed mass of lymphoid tissue. It is a prominent gland at the time of birth but it gradually atrophies In the adult.

Hassall's corpuscles are spherical or oval bodies present in the thymus. They are phagocytic in function.

Hormone. Thymus secretes a hormone named thymosin which stimulates the development of certain kinds of white blood cells involved in producing immunity. It also hastens attainment of sexual maturity.

Thymosin hormone stimulates the lymphocytes to destroy the antigens produced by bacteria or pathogen. It self may be destroyed by these lymphocytes.


Related Discussions:- Thymus

Are fibrates effective at lowering tg levels, Q. Are Fibrates effective at ...

Q. Are Fibrates effective at lowering TG levels? Fibrates are effective at lowering TG levels by 20 per cent to 50 per cent and raising HDL by 10-35 per cent. LDL reduction var

Transport through plasma membrane, TRANSPOR T THROUGH P.M. P.M. regula...

TRANSPOR T THROUGH P.M. P.M. regulates transport of materials in and outside of cell P.M. is semi- permeable as it allows rapid passage to water molecules. P.M. is selectively

Why mosquito bites and it causes itching, Why mosquito bites and it causes ...

Why mosquito bites and it causes itching? A mosquito does not really bite you, of course. It sucks your blood. To help enable effective blood sucking, it firstly injects ant

Explain requirement for simple staining of bacterial culture, Explain Requi...

Explain Requirements for Simple Staining of Bacterial Cultures Culture: 24 hours bacterial culture of E. coli and Bacillus on nutrient agar or in broth. Reagents: Methylene

What is the kind of digestive system of echinoderms, Q What is the kind of ...

Q What is the kind of digestive system of echinoderms? Echinoderms present a complete digestive system with anus and mouth. Q. Do sea urchins have teeth? Sea urchins ha

What is leghemoglobin, The  nitrogenase  complex  is  extremely  sensitive ...

The  nitrogenase  complex  is  extremely  sensitive  to  inactivation  by  O2,  so  the enzyme  must be protected  from this reactive  substance.  During the root nodules of legumi

Explain the causes of steatorrhoea, Q. Explain the Causes of steatorrhoea? ...

Q. Explain the Causes of steatorrhoea? The list of possible underlying causes of steatorrhoea includes: • Malabsorption • Malabiorptian of fats in small intestine •

Anterior leaflet procedure-technique of operation, Anterior Leaflet Procedu...

Anterior Leaflet Procedure: Repair is more difficult and less successful. Previously, a triangular excision of the anterior leaflet used to be done for prolapse and rupture of

Protect a species from extinction, In what ways can we try to protect a spe...

In what ways can we try to protect a species from extinction? We can attempt to protect species from extinction by making it illegal to kill the threatened animals or uproot o

Tonicity and the plant cells., Tonicity and the plant cells. Complete the ...

Tonicity and the plant cells. Complete the experiment and answer the questions. Table 7.3: Potato type: Potato A: Beginning displacement (ml) = Ending displacem

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