Thyroid gland, Biology

Assignment Help:

THYROID GLAND -

  • It develops from the endoderm of the embryo.
  • The thyroid gland is the largest endocrine gland located anterior to the thyroid cartilage of the larynx in the neck.
  • It is bilobed organ. The two lobes are connected by a narrow structure called isthmus.
  • The microscopic structure of the thyroid gland shows thyroid follicles composed of cubical epithelium and filled with a hormonous material called colloid.
  • Small amount of loose connective tissue forms stroma of the gland. Besides containing blood capillaries, the stroma contains small clusters of specialized parafollicular cells or 'c' cells.
  • The thyroid gland can store enough hormones in the form of colloid to supply the body (for about two months).

1608_parathyroid gland.png 1812_thyroid gland.png


Related Discussions:- Thyroid gland

X-linked dominant genes, X-Linked Dominant Genes Dominant X-linked gene...

X-Linked Dominant Genes Dominant X-linked genes are always expressed in both the sexes just as in autosomal traits. One dose of X-linked dominant allele produces its effects in

What are the classification of reasons of implant failure, Classification o...

Classification of the reasons of implant failure: In order to understand failures it is vital to know, why they occur. The reasons are plenty and to streamline, these have been

Into which classes are mollusc divided, Q Into which classes are mollusc di...

Q Into which classes are mollusc divided? What are some representing beings of each class? The phylum Mollusca is divided into five main classes: pelecypods, or bivalves (Pelec

Mrna molecule codifies only one kind of protein, Q. An mRNA molecule codifi...

Q. An mRNA molecule codifies only one kind of protein? Eukaryotic cells have monocistronic mRNA, that is each mRNA codifies only one polypeptide chain, Prokaryotes can present

Future challenges of management of renewable resources, Define Future chall...

Define Future challenges of management of renewable resources?   In response to past shortcomings in a few fisheries management, and to dealing with other conservation goals

The genetic code is a triplet code, In During translation, the series of an...

In During translation, the series of an mRNA molecule is examined from its 5' end by ribosomes that then synthesize an appropriate polypeptide. Together in prokaryotes and in eukar

Population growth, Increase in population size is known as population growt...

Increase in population size is known as population growth. It depends upon number of persons added to the population and number of persons lost from the population. Addition in pop

Why is it hard to produce vaccines against dengue and aids, Q. Why is it di...

Q. Why is it difficult to produce efficient vaccines against a viral infection like dengue and AIDS? It is difficult to make vaccines for dengue because there are four differen

Evolutionary novelty presented by annelids, Q. What is the major evolutiona...

Q. What is the major evolutionary novelty presented by annelids? The main evolutionary novelty presented by the beings of the phylum Annelida is the coelom, the internal body c

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