What do you mean by nervous system, Biology

Assignment Help:

Q. What do you mean by Nervous System?

Structural Organization:  CNS + PNS

Functional Organization:  only concerned with PNS

Sensory (Afferent) ->  CNS

Motor (Efferent)    <-  CNS

Nervous Tissue: 

Two principal tissues:  Neurons and Supporting Cells (Neuroglia)            

  • Neurons: Highly specialized to transmit messages (impulses). Vary greatly in shapes, however share common features. These include Dendrites, Cell Body, Axons, and Axon Terminals
  • Glia: Different types of cells that generally support, insulate, and protect the delicate neurons. Note that glia still divide during adult life (Gliomas/brain tumors). Some of these cells form the myelin layer, others make CSF.

Related Discussions:- What do you mean by nervous system

Explain theory of enzyme action, Explain Theory of enzyme action L. Mic...

Explain Theory of enzyme action L. Michaelis  and k L. Menten developed a general  theory of enzyme action and kinetics  in  1913. According to this theory, we learnt  that

Tuberculosis, Tuberculosis Tuberculosis (TB) is an ancient disease of ...

Tuberculosis Tuberculosis (TB) is an ancient disease of man, animals and birds. It is an infectious disease, characterized by slow development of tubercles in almost any organ

What is meant by terminal electron acceptor, What is meant by terminal elec...

What is meant by terminal electron acceptor? Give examples of e acceptors for aerobic and anaerobic respiration.

In hormonal terms why does menses occur, Q. In hormonal terms why does mens...

Q. In hormonal terms why does menses occur? Menses is the endometrial monthly desquamation that occurs as the progesterone and estrogen levels fall after the regression of the

Explain the sex composition of the population, Explain the Sex Composition ...

Explain the Sex Composition of the Population? Sex composition of human population is one of the basic demographic characteristics, which is extremely vital for any meaningful

Explain about riboflavin, Explain about Riboflavin Aqueous solution sh...

Explain about Riboflavin Aqueous solution shows a pronounced green-yellow fluorescence, which is maximal at a pH of about, 6-7 and disappears upon the addition of acids and al

What is karyotype, What is karyotype? The name karyotype is given to th...

What is karyotype? The name karyotype is given to the set of chromosomes of an individual, generally when visualized and identified under the microscope. The visualization usua

Digestive system of class asteroidea, Digestive System of Class Asteroidea ...

Digestive System of Class Asteroidea Most asteroids are scavengers or carnivores and feed on snails, bivalves, polychaets, other echinoderms, fish, sponges, sea anemones and p

Estimation of burn area, Estimation of Burn Area: The  estimation of  ...

Estimation of Burn Area: The  estimation of  the  extent  of  burn area expressed as  the  percentage  of  the surface  area  of  the skin  burnt to  the  total body  surface

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