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

Carbohydrate digestion, Carbohydrate Digestion Simple sugars like gluc...

Carbohydrate Digestion Simple sugars like glucose and fructose can be absorbed and metabolised directly but disaccharides such as sucrose or lactose and polysaccharides such a

Why ascending method of paper chromatography is preferred, Why Ascending Me...

Why Ascending Method of Paper Chromatography is Preferred? The ascending method is preferred because of the simplicity of the set up. In actual method the substance to be separ

In what ways does over-grazing lead to soil erosion, In what ways does over...

In what ways does over-grazing lead to soil erosion? Over-grazing leads to erosion because (i) the animals delete all the vegetation, so exposing the soil to heavy rain, (ii) t

Explain water soluble vitamins for infants, Explain Water soluble vitamins ...

Explain Water soluble vitamins for Infants? Thiamin, riboflavin and niacin requirements are met through breast milk alone and solely breast-fed infants meet their requirements.

Scientific naming system, theory of scientific naming system

theory of scientific naming system

Reproduction, what is the difference between anisogamy and oogamy?

what is the difference between anisogamy and oogamy?

Define needs for nutritional relief programme & intervention, Define needs ...

Define needs for Nutritional Relief Programme and Interventions? A general feeding programme is required during first stage when the affected population does not have sufficien

An a=t mispairing leads to an a=c substitution, An A=T mispairing leads to ...

An A=T mispairing leads to an A=C substitution. The other DNA helix will contain a(n) __ pair. a. A=C b. A=T c. G=C d. B=Q e. T=T Can you also explain it please so if I'm ask

Under which form is nitrogen fixed by living beings, Under which form is ni...

Under which form is nitrogen fixed by living beings? Most living beings cannot use molecular nitrogen to get nitrogen atoms. Producers fix nitrogen mostly from nitrate (NO3-).

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

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages