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

State the principles of behaviour change communication, Principles of behav...

Principles of behaviour change communication - BCC should be integrated with program goals from the starting. BCC is a necessary part of diabetes prevention, care and support p

Describe about carbohydrates-fats and proteins, Q. Which are the three part...

Q. Which are the three parts of the small intestine? The small intestine is divided into three portions: duodenum, ileum and jejunum. Q. By generally dividing food into car

Acute bronchitis, Acute Bronchitis: Acute bronchitis is inflammation  ...

Acute Bronchitis: Acute bronchitis is inflammation  of one or more bronchi  and occurs specifically  in children younger than  four year?.  It is usually associated with previ

Macro taxonomy, what are the character selection criteria?

what are the character selection criteria?

Explain the issues related to food production, Explain the issues related t...

Explain the issues related to food production? Let us now understand some issues related to food production, these are: Factors influencing food production, Analysi

Homework, 1) a) Initially, how do skeletal muscles (the type of muscle atta...

1) a) Initially, how do skeletal muscles (the type of muscle attached to bones) make ATP? b) write the reaction for this procss (Crp +ADP => Cr + ATP) as a ''coupled'' reaction, id

Respiratory system, describe the structure of a lung in terms of covering m...

describe the structure of a lung in terms of covering membranes and cavities

Corticosteroid, Corticosteroid Anti-inflammatory and immuno suppressiv...

Corticosteroid Anti-inflammatory and immuno suppressive. Route: Oral, parental, dose as prescribed. Side-effects: sodium and fluid retention, potassium and ca

Why isnt gas exchange done through cutaneous diffusion, In arthropods why i...

In arthropods why isn't gas exchange done through cutaneous diffusion? In arthropods the impermeability of the exoskeleton makes the passage of gases complex. In addition the n

Basic planes of cleavage, Basic Planes of Cleavage The basic planes a...

Basic Planes of Cleavage The basic planes along which the egg and its daughter blastomeres are divided during early cleavage are: A. Meridional Plane - the cleavag

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