Nervous tissue and its components, Biology

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.

Posted Date: 10/1/2012 4:11:27 AM | Location : United States







Related Discussions:- Nervous tissue and its components, Assignment Help, Ask Question on Nervous tissue and its components, Get Answer, Expert's Help, Nervous tissue and its components Discussions

Write discussion on Nervous tissue and its components
Your posts are moderated
Related Questions
Things to do-  We ought to aide by earthquake resisting building codes during construction and retrofitting of existing buildings. We should have a first AID box handy and learn

why green seeds reappeared in the f2 generation

Benefits of diet modification are: 1) Control of sugar. 2) Control of weight. 3) Control of blood pressure. 4) Control of lipid profile. 5) Good health and well bei

Delimitation and Limitation: There may  be many  aspects of the problem that need  to be  explored, but  it  is difficult to  cover all aspects in  a single research study bec

Describe how the structure of chromatin and chromosomes facilitates the following functions: a) DNA packaging. b) Regulation of gene expression.  c) Replication at the

Q. What are mycotoxins? How are these produced and where are these found? Are these naturally-occurring or produced? What is their significance? First what are mycotoxins?

what is granna

Define drawbacks for underwater weighing method? Since the major drawbacks with UWW method are that the subject needs to be totally submerged underwater and exhale all of the a

Q. How many ATP molecules are made after glycolysis? Glycolysis is a process similar to glucose degradation in fermentation it produces final balances two molecules of ATP for

Formation of  lactate and  its consumption Formation of  lactate and  its consumption : If anaerobic conctitions prevail, the reoxidation  of NADH  through the respiratory cha