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

Natural selection and genetic drift, Tell me which statement belongs to eit...

Tell me which statement belongs to either natural selection, genetic drift, or gene flow Can you tell me if I am correct? -Consistently causes a population to become better adapted

Effects of noise - noise pollution, Effects of Noise - Noise Pollution ...

Effects of Noise - Noise Pollution Noise can affect in the following three ways: Interferes with communication, Diminishes hearing and Affects health and even

Define the axon of a neuron, Consider an axon of a neuron. At time=t1, its ...

Consider an axon of a neuron. At time=t1, its voltage is at threshold for an action potential; at time=t2, its voltage is at 0 millivolts prior to the peak of that action potential

Define information required for management of emergencies, Define Informati...

Define Information Required for Management of Emergencies? Management or intervention needs accurate information about the actual situation and includes many non-nutritional co

Determine the nature and degree of abnormality, Determine the Nature and De...

Determine the Nature and Degree of Abnormality The nature and degree of abnormality will effect normal neural growth and maturational outcome. For example, in an adult damage t

Explain the active transport process, Which of the following is an active t...

Which of the following is an active transport process? A. Net flux of sodium across the plasma membrane via voltage-gated sodium channels. B. Net flux of glucose across the

How do plants solve the problem of transporting substances, How do plants s...

How do plants solve the problem of transporting substances throughout their tissues? In bryophytes the substance transport is completed by diffusion. In tracheophytes (pteridop

Neurochemistry of attention, Neurochemistry of Attention Different neur...

Neurochemistry of Attention Different neurotransmitters systems are implicated in attention. Cholinergic, dopaminergic and serotonergic systems play major roles in neurochemica

Protein necessity, Proteins necessity They are called as body builde...

Proteins necessity They are called as body builders. The proteins are used in various metabolic pathways and body building. They help in repairing the tissues of the b

Imagine an animal that hast he system similar to abo blood, Imagine an anim...

Imagine an animal that has a system similar to ABO blood types in humans. The ABO part is the same. In addition, they have a second independent gene that creates a mimic A protein,

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