Parathyroid gland, Biology

Assignment Help:

PARATHYRIOD GLANDS -

  1. They develop from the endoderm of the embryo.
  2. The parathyroid glands consist of four separate glands located on the posterior surface of the lobes of the thyroid gland.
  3. The cells of parathyroid glands are arranged in a compact mass and are of two types: small chief cells or principal cells and large oxyphil cells (or eosinophil cells).
  4. The cells are enclosed by a delicate connective tissue capsule. The chief cells are much more numerous than the oxyphil cells. The latter are absent in the young and appear a little before the age of puberty.

269_parathyroid gland.png


Related Discussions:- Parathyroid gland

Encystment – protozoan, Encystment – Protozoan Encystment is character...

Encystment – Protozoan Encystment is characteristic of the life cycle of many protozoan. The protozoan secretes a thickened envelope (cyst) around itself and becomes inactive

Dot blot, Dot blot  is the technique for measuring the amount of one pertic...

Dot blot  is the technique for measuring the amount of one perticular DNA or RNA in the highly complex mixture. The samples are spotted onto the hybridization membrane (like nitroc

What is the change in allele frequency in a population, Microevolution is: ...

Microevolution is: the change in allele frequency in a population. Cannot occur if genetic equilibrium is reached. Results in the formation of a new species. Is influenced by mutat

Vector for cloning genes into higher organisms, Which one of the following ...

Which one of the following is used as vector for cloning genes into higher organisms ? 1. Baculovirus 2. Salmonella typhimurium 3. Rhizopus nigricans 4. Retrovirus

Briefly explain how amniocentesis used in genetic screening, Briefly explai...

Briefly explain how amniocentesis and chorionic villi sampling are used in genetic screening. A small sample is removed from the amniotic fluid surrounding the fetus or from t

Explain about the protein-energy ratio, Explain about the Protein-Energy Ra...

Explain about the Protein-Energy Ratio (NDP Cal%)? Platt and his colleagues (1961) are largely responsible for the introduction of the ratio of protein energy to total energy (

Remove the crown for reuse-endodontics principles, Remove the crown for reu...

Remove the crown for reuse - If the decision is made to remove the crown for reuse - The visibility is increased - Allowing for much easier removal of canal obstructions -

Explain pulmonary capillary wedge pressure, Q. Explain Pulmonary Capillary ...

Q. Explain Pulmonary Capillary Wedge Pressure? The PCW waveform is similar to LA pressure waveform except that it is damped and delayed due to transmission through the lungs. T

Define transcription phase of gene expression process, Define Transcription...

Define Transcription Phase of Gene Expression Process? Transcription is the enzyme synthesis of RNA on a DNA template. This is the first stage in the overall process of gene ex

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