Nervous tissue and its components, Biology

Assignment Help:

NERVOUS TISSUE

The nervous tissue in general develops from the ectoderm of the embryo, but the microgliocytes.

It does not have a matrix.

The special properties of the cells of the nervous tissue are, excitability and conductivity. The response may be sensation, such as pain or some activity such as muscle contraction or glandular secretion.

The cells are surrounded by special connective tissue, neuroglia in CNS & schwann cells in PNS.

 

COMPONENTS OF NERVOUS TISSUE -

Neuron is a structural and functional unit of the nervous tissue. Neurons are the longest cells in the body.

Human nervous system has about 100 billion neurons. Majority of the neurons occur in the brain.

Fully formed neurons never divide and remain in interphase throughout life. Certain neurons have flask shaped cytons and are called Purkinje cells, which occur in the cerebellum of the brain.

A neuron consists of main cell body and cytoplasmic processes arising from it.


Related Discussions:- Nervous tissue and its components

Explain adverse effects of voriconazole, Adverse Effects of voriconzole ...

Adverse Effects of voriconzole Transient visual disturbances, including blurred vision, photophobia and altered perception of color or image, are common with voriconazole. Rash

Explain briefly about vitamin B12, Vitamin B 12 (Cyanocobalamin) Vitam...

Vitamin B 12 (Cyanocobalamin) Vitamin B 12 refers to a group of Cobalt-containing corrinoids known as cobalamins. It is also called antipernicious- anemia factor, extrinsic f

Explain both food and light as zeitgebers, Must account for both food AND l...

Must account for both food AND light as zeitgebers Because of the continuous light / dark periods of the year; light not always able to act as a zeitgeber. Food

Crossing over, is crossing over of chromosomes is a method?

is crossing over of chromosomes is a method?

How much fats should be taken for management of obesity, How much Fats shou...

How much Fats should be taken for management of obesity? Fats, being a concentrated source of energy need to be restricted. Excess dietary fat promotes much more weight gain th

Describe in detail about the cytoplasm, Describe in detail about the Cytopl...

Describe in detail about the Cytoplasm Cytoplasm also possesses a number of dense granular elements (about 25,000 per cell) called the ribosomes, which are the sites of protein

Horse diseases-equine encephalomyelitis, Equine encephalomyelitis Encep...

Equine encephalomyelitis Encephalomyelitis or inflammation of the brain tissue and the spinal cord, can be brought about by different viruses. Eastern-, Western- and Venezuelan

Explain the hydrophobic grid membrane filter (hgmf), Explain the Hydrophobi...

Explain the Hydrophobic Grid Membrane Filter (HGMF)? It is also used to enumerate microorganisms from a variety of food samples. By using this method, organisms as few as 10 ce

Explain about metabolic diseases, Q. Explain about Metabolic diseases? ...

Q. Explain about Metabolic diseases? Metabolic diseases, as you already know, refer to those disorders in which the various reactions in the cells are effected (production of e

Waste management in other species, W a s t e Management in other specie...

W a s t e Management in other species Solid and pellet nature of sheep and goat faecal matter make it easier to handle. This manure can easily be swept off the floors and d

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