Peripheral nervous system (pns), Science

Assignment Help:

Peripheral nervous system (pns):

Except for the  brain and the spinal cord,  the  rest of  the network  of  nerves and neurons is included in tha  peripheral nervous system, or PNS for short. This system links the brain andspinal cord to the rest of  the body. Any message that is sent to the brain or from it to the rest of body, travels along the peripheral nerves. The PNS consists of  12 pairs of  individual nerves called cranial nerves,  originating  from the brain hence called cranical nerves (from cranium, the  skull) and the 31 pairs of  spinal nerves that branch off from the spinal cord. Each  spinal nerve splits into  three components  soon after  leaving the spinal cord. One- branch passes to the skin and muscles of the  front of  the body;  a second branch leads to the skin and muscles of  the back; the third branch reaches the  internal organs. The first two branches carry sensory information to the  brain, and carry motor signals  from the brain to the muscles and glands. The  third branch forms the "autowmic  system" which governs actions  of  the internal organs that are mostly involuntary. If  you  look at Fig. again, you would be able to appreciate  the  vast network of  nerves that make up the peripheral nervous system.  

2114_Forebrain.png


Related Discussions:- Peripheral nervous system (pns)

Electricity, why do we get shock when we touch an open wire?

why do we get shock when we touch an open wire?

The Big Bang Theory, 1. The red shift seen in all distant galaxies, whose s...

1. The red shift seen in all distant galaxies, whose size is proportional to its distance from us, what effect will this have on planet Earth?

Forebrain , Forebrain: The largest part of  the brain that you  see in ...

Forebrain: The largest part of  the brain that you  see in Fig. is the cerebrum. It consists of  two halves or hemispheres  joined  together by  a band of  nerve fibres. Intere

Biological basis of aggression, Biological Basis of Aggression: Studies...

Biological Basis of Aggression: Studies show that mild electrical stimulation of  a specific region of the hypothalamus - produces aggressive behaviour  in animals. When a cat'

Explain the dichromates or mild colour blindness, Explain the Dichromates o...

Explain the Dichromates or Mild Colour Blindness A dichromate individual possesses only two cone pigments. Lack of the red pigment, called protanopia, makes distinguishing of t

Healing touch of lasers, Healing Touch of Lasers: Contrast the above ...

Healing Touch of Lasers: Contrast the above application  of lasers with their uses in medicine where the laser is working wonders. A laser can be applied with almost perfect

Food borne diseases, Food Borne Diseases: If  the food handler, like ...

Food Borne Diseases: If  the food handler, like the cook, suffers  from some infection and is not careful about washing his hands after defecation,  the germs or eggs of worm

Ray optics, find maximum angle for which the light suffers tir at vertical ...

find maximum angle for which the light suffers tir at vertical surface

Objectives laws, Objectives While undertaking this exercise and after i...

Objectives While undertaking this exercise and after its completion, you should be able to: share with your peer group, the relevant information1 knowledge/opinions with regard

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