Thyroid gland, Biology

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

Posted Date: 10/2/2012 6:41:50 AM | Location : United States







Related Discussions:- Thyroid gland, Assignment Help, Ask Question on Thyroid gland, Get Answer, Expert's Help, Thyroid gland Discussions

Write discussion on Thyroid gland
Your posts are moderated
Related Questions
How many regulatory enzyme types known in metabolic pathways, explain in detail by giving examples.

Q. Is fecundation in amphibians internal or external? In this aspect are amphibians evolutionarily proximal to fishes or to reptiles? In the majority of the amphibian species f

1. DNA must be extensively folded in order to fit inside a nucleus that is less than 10 um in diameter. a. Describe how DNA is folded into chromatin structures of increasing com

Identify three ways that bacteria can be transmitted from person to person. Diseases affecting nerves contain botulism and tetanus; diseases affecting the intestine include sa

Overturn - Thermal stratification The summer or winter stratification is seasonal. Circulation of lake water occurs twice a year, in the spring and autumn (fall) seasons by a

Explain the factors that lead to vitamin K deficiency? The factors that lead to vitamin K deficiency include: 1) Marginal dietary intake if one undergoes trauma and extensiv

Long buccal nerve The long buccal nerve is a branch of the mandibular division of the trigeminal nerve which provides sensory innervation to the buccal gingiva and mucosa of th

What is Hazard Identification Hazard  Identification :  The  identification  of  known  or potential  health effects associated with  a  certain  agent.

What are the types of plant geotropisms? Why do the stem and the root present opposite geotropisms? The parts of geotropisms are the positive geotropism, that in which the plan

Explain Functions of Ascorbic Acid? Vitamin C is easily oxidized, and the majority of its functions in vivo rely on this property. It plays a key role in the body's synthesis o