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)

Explains osmotic pressure – functions of plasma proteins, Explains Osmotic ...

Explains Osmotic Pressure – Functions of plasma proteins Plasma proteins exert an osmotic pressure of 25 mm Hg, which helps in maintaining plasma volume. The osmotic pressure e

Why do dark colours absorb heat?, Question 1 Outline the risks of nuclear ...

Question 1 Outline the risks of nuclear fissions Question 2 Comment on semiconductor devices and their usage Question 3 In a total system approach, what are the various

Explain the hormones in the urine, Explain the Hormones in the urine In...

Explain the Hormones in the urine Increased or decreased production of a hormone in the body alters the amount of hormone or its degraded products excreted in the urine. For ex

Soil science.., how is the soil colloidal material look like when ion and c...

how is the soil colloidal material look like when ion and cation exchange capacity of the soil?

True, what is the first layer of the earth

what is the first layer of the earth

Why did the continents spread apart, Why did the continents spread apart? ...

Why did the continents spread apart? This is because of the heat generated from the earth's interior and earthquakes - the convection currents deep within the earth due to the

Bullock cart, how is metal tyre fitted on the wheel of bullock cart

how is metal tyre fitted on the wheel of bullock cart

Define potential and kinetic energy, 1.     Define potential and kinetic en...

1.     Define potential and kinetic energy.  2.     State the first and second laws of thermodynamics. 3.     Explain how organisms tend to defy the second law of thermodynam

Ecology, how is ecology related to other discipline?

how is ecology related to other discipline?

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