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)

A floating experiment with different kinds of wood, A floating experiment w...

A floating experiment with different kinds of wood Secure a cork, and pieces of wood like as maple, mahogany and ebony. Place them in a pan of water and notice how every one be

Determine the agronomic factors of fertilizers, Determine the Agronomic fac...

Determine the Agronomic factors of fertilizers These factors are key to efficient use of fertilizers for crop production and include fertilizer responsiveness of crops, spacing

Microbes, advantages and disadvantages of proroza

advantages and disadvantages of proroza

Physiology, Monosaccharides and amino acids are absorbed into the blood in ...

Monosaccharides and amino acids are absorbed into the blood in the intestinal capillaries. Is it true or False?

Objectives of laws and regulations, Objectives : After studying this unit,...

Objectives : After studying this unit, you should be able to 1.  explain the need for safety and health regulations using an example, 2.  describe the use of National Buildi

Which of the following would NOT affect gass exchange?, A) thickness of the...

A) thickness of the respiratory membrane B) gas concentration gradients C) decrease in pulmonary ventilation D) lung surface area E) no exceptions

Astronomy, is it true or false that, as the universe expands, it is expandi...

is it true or false that, as the universe expands, it is expanding within an already existing universe

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