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)

Properties of waves, how amplitude , wavelength , and frequency are relate...

how amplitude , wavelength , and frequency are related to the energy of a wave

The meaning of pressure, The meaning of pressure Calculate the area usi...

The meaning of pressure Calculate the area using squared paper, and measure the force per square centimetre. Standing on one foot will deal out your weight over about half the

Physico-chemical properties of niacin, Important physico-chemical propertie...

Important physico-chemical properties of niacin and niacinamide are as follows: a)  Niacin is a white crystalline solid. b) While niacin  is sparingly soluble in water, etha

Vision, What is vision and how is it connected to the brain?

What is vision and how is it connected to the brain?

Define caecum - part of large intestine, Define Caecum - Part of Large Inte...

Define Caecum - Part of Large Intestine This is the first part of the colon. Ileocolic valve opens from the ileum on the medial aspect of the caecum. The vermiform appendix is

Explain the functions of multicellular organism, Explain the functions of M...

Explain the functions of Multicellular Organism Multicellular organisms are specialized quite similar to a team that does a lot of work efficiently as compared to a single pers

How to make a simple vacuum pump, How to make a simple vacuum pump Secu...

How to make a simple vacuum pump Secure a bicycle or automobile hand pump. Open the pump and delete the piston. Un- screws the bolt that holds the leather washers. Reverse the

Monitoring of resource utilisation, Monitoring of resource utilisation ...

Monitoring of resource utilisation Continuous recording of the changes in the quality and quantity of various.resources  is as imyortant an element of resource planning as ev

Explain increase in sound wave pressure through middle ear, Explain Increas...

Explain Increase in Sound Wave Pressure through Middle Ear There are certain factors which contribute to an approximately eighty-fold increase in sound wave pressure through mi

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