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

Transmissible gastroenteritis of swine, Transmissible gastroenteritis of sw...

Transmissible gastroenteritis of swine The disease, first reported from the USA in 1964, is caused by antigenic group 1 mamalian coronavirus, a member of genus Coronavirus of

Action of hormones, Action of Hormones We said earlier that hormones a...

Action of Hormones We said earlier that hormones are released into the blood stream or extracellular fluid and therefore, reach most of the cells of the body. However, they

Define chlorophyll, Chlorophyll Chlorophyll, the pigment responsible fo...

Chlorophyll Chlorophyll, the pigment responsible for giving bright green colour to the vegetables, is very unstable and undergoes changes in colour which are often considered t

Why are agricultural fields often less stable, Why are agricultural fields ...

Why are agricultural fields often less stable than natural communities in the similar area? Because agricultural fields usually having one species of crop plant, they have low

What is nidation, What is nidation? In which phase of the menstrual cycle d...

What is nidation? In which phase of the menstrual cycle does nidation occur? Nidation is the implantantion of the embryo in the uterus. Nidation happens around the 7th day afte

What are the cnidocytes, Q. What are the cnidocytes? What is the name of th...

Q. What are the cnidocytes? What is the name of the capsule inside the cnidocyte? What are the biological functions of this structure? Cnidocytes are specific cells present in

Nutrition occurs in protozoans, Nutrition occurs in Protozoans All typ...

Nutrition occurs in Protozoans All types of nutrition occur in Protozoa. Some protozoans synthesize their own food from inorganic precursors (carbon dioxide, nitrates or ammon

Determine the food sources of vitamin a, Determine the Food Sources of Vita...

Determine the Food Sources of Vitamin A? Vitamin A or retinol performed vitamin A), as you may already know, is found only in foods of animal origin, such as milk, cheese, crea

Describe about the halstead''s discriminating tests, Describe about the Hal...

Describe about the Halstead's discriminating tests Halstead's discriminating tests are viewed as a measure of adaptive abilities, of skills that ensured man's survival on the p

Where can rna are found within cells, In the eukaryote cell nucleus, RNA ca...

In the eukaryote cell nucleus, RNA can be found dispersed in the nuclear fluid, along with DNA, and as the major constituent of the nucleolus. In cytosol (in eukaryotes or in bacte

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