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

Vitamins, Which vitamin is useful for the clotting of blood?

Which vitamin is useful for the clotting of blood?

Describe about the implant surgeon, Describe about The implant surgeon ...

Describe about The implant surgeon The implant surgeon should have basic knowledge of the macroscopic and microscopic anatomy of the jaw bones with their associated neurovascul

Explain about anterior superior alveolar nerve, Anterior superior alveolar ...

Anterior superior alveolar nerve It is a branch of infraorbital nerve which arises within the infraorbital canal. It gives a nasal branch which passes into nasal cavity to supp

Explain monomeric enzymes, Monomeric enzymes Monomeric enzymes are thos...

Monomeric enzymes Monomeric enzymes are those which consist of only a single polypeptide chain, so they cannot be dissociated into smaller units. Very few monomeric enzymes are

In what ways does over gazing lead to soil erosion?, Ask In what ways does ...

Ask In what ways does over gazing lead to soil erosion?

Pullorum disease (bacillary white diarrhea), P u l l orum disease (baci...

P u l l orum disease (bacillary white diarrhea) This disease is caused by poultry-adapted strain of Salmonella genus- Salmonella Pullorum and considered an important hatc

Explain prevalence in coronaw artery disease, Explain Prevalence in coronaw...

Explain Prevalence in coronaw artery disease ? The first report to highlight the high prevalence of CAD among Indian expatriates came from an autopsy study done in Singapore. C

Cell membrane, CELL MEMBRANE As discrete units of life all living cell...

CELL MEMBRANE As discrete units of life all living cells are separated from each other and from their external environment by an extremely delicate (75 A to 100 a= 0.00075 to

Atp molecules are produced for each glucose molecule, How many ATP molecule...

How many ATP molecules are produced for each glucose molecule used in fermentation? How many ATP molecules are produced for each glucose molecule used in aerobic respiration? I

Subphylum crustacea, Subphylum Crustacea Crustacea are mainly aquatic...

Subphylum Crustacea Crustacea are mainly aquatic arthropods with gills for respiration. Cephalothorax has usually a carapace; appendages biramous but modified for several fun

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages