Thymus gland, Biology

Assignment Help:

THYMUS GLAND

  1. Flat, bilobed gland located in the mediastinal space in front of heart.
  2. Well developed in new born child and grows upto puberty but starts degenerating thereafter at 25 years of age, it disappears.
  3. Parenchyma contains numerous lymphocytes undergoing proliferation and maturation forming different types of T- Iymphocytes which later migrate to spleen, lymph nodes, Peyer's patches etc. and remain stored there or some are also retained in circulating blood.
  4. Secretes a hormone, thymosin, which activates lymphocytes.

Related Discussions:- Thymus gland

Intermediate filaments - role of cytoskeleton structures, Intermediate fila...

Intermediate filaments - Role of Cytoskeleton Structures These filaments are intermediate in size among microtubules and microfilaments and are 10 nm in diameter. Five classes

Is the epithelium vascularized, Q. Is the epithelium vascularized? How do o...

Q. Is the epithelium vascularized? How do oxygen and nutrients reach the epithelium? Why is this feature an important evolutionary acquisition? Epithelia are not vascularized c

Transplantation, Transplantation - It is implanting of a living or p...

Transplantation - It is implanting of a living or preserved tissue or organ from one site to another side in the same individual or from one individual called donor to recip

Disability adjusted life years (dalys), Disability Adjusted Life Years (DAL...

Disability Adjusted Life Years (DALYs) DALYs is a measure for the overall ‘burden of disease’. Originally developed by the World Health Organization (WHO), it is being increas

Explain phylum chlorophyta, Phylum Chlorophyta (green algae) 1) The c...

Phylum Chlorophyta (green algae) 1) The chlorophyll is the main photosynthetic pigment. 2) There is little or no cell differention in thallus. Thallus is usually filamento

Polyphyletic theory - metazoa, Polyphyletic Theory - Metazoa This theo...

Polyphyletic Theory - Metazoa This theory was suggested by Greenheig (1959) and some other workers. According to this theory, sponges, coelenterates, ctenophores and flatworms

Bracketed keys to identifying plants and animals, Q. Bracketed Keys to iden...

Q. Bracketed Keys to identifying plants and animals? In bracketed keys two couplet leads of the same rank are bracketed together. The alternative clues or couplets are written

Gregor mendel, why green seeds reappeared in the f2 generation

why green seeds reappeared in the f2 generation

Characteristic features of phylum cnidaria, Characteristic features of Phyl...

Characteristic features of Phylum Cnidaria All are aquatic animals. Radial or biradial symmetry around an oro-aboral axis, but no head. Diploblastic, with an epidermi

State the term - vibrio parahaemolyticus gastroenteritis, Vibrio parahaemol...

Vibrio parahaemolyticus gastroenteritis While most other known food poisoning syndromes may be contracted from a variety of foods,  V. parahaemolyticus gastroenteritis is contr

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