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

How to lower the risk of drug-nutrient interactions, How to Lower the Risk ...

How to Lower the Risk of Drug-Nutrient Interactions? Eat a healthy diet using the food guide pyramid. Follow directions on how to take medication (prescription and ove

Embryology and histology, Embryology: Embryology (from Greek words embryon...

Embryology: Embryology (from Greek words embryon which means unborn embryo and logia which means study) is a branch of science which deals with the development of an embryo starti

Egg drop syndrome-76 (eds-76), E g g drop syndrome-76 (EDS-76) An out...

E g g drop syndrome-76 (EDS-76) An outbreak of sudden drop in egg production or a failure to achieve a normal peak in production despite optimum managemental and nutrition st

What is the function of the skin in humans, Q What is the function of the s...

Q What is the function of the skin in humans? The skin is the external covering of the body. In humans its major functions are protection and perception of information from the

Arteral supply of the heart, The branches of the left coronary artery are  ...

The branches of the left coronary artery are  anterio interventricular artery (AIV artery) and circumflex artery which is considered to be the continuation of the left coronary art

Describe the incorporated protectants rules, Which actions proposed in 1994...

Which actions proposed in 1994 were not finalized in the recently issued plant- incorporated protectants rules ? EPA has shown in a supplemental notice, which is part of the fi

Determine biologically compatibility of implant materials, Biologically com...

Biologically compatibility od implant materials An ideal implant material will elicit mainly physiological reactions within the surrounding tissues (bone, connective tissue and

Anaplasia - characteristics define cancer, Anaplasia - Characteristics Defi...

Anaplasia - Characteristics Define Cancer Anaplasia is a structural abnormality where cells resemble primitive or embryonic tissue in which adult functions are diminished or t

Define lactobacillus, Mention the product and its use formed by each the mi...

Mention the product and its use formed by each the microbes listed below: i)  Lactobacillus ii) Streptococcus iii)  Saccharomyces cerevisiae

Structures of a flowering plant, Which structures of a flowering plant give...

Which structures of a flowering plant give rise to (a) potatoes, (b) the fleshy scales of an onion?   (a) A potato is a tuber formed at the end of an underground stem (b) O

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