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)

Introduction to laws regulations and related issues, INTRODUCTION : This e...

INTRODUCTION : This exercise is based on here 'Laws and Regulations' of this course. What are we going to do in this exercise? - This might be the question arising in your mind. I

Placement of first aid box-accidents and first aid, Placement of First Aid ...

Placement of First Aid Box : All first aid equipment should be placed close to the sites where accidents are likely to occur. The location of first aid boxes should be such that t

Explain inspiratory capacity and expiratory reserve volume, Explain Inspira...

Explain Inspiratory Capacity and Expiratory Reserve Volume Inspiratory Capacity (IC):  It is the tidal volume and the volume of air taken during maximum inspiratory effort.

Explain the direct and indirect effects of lime application, Explain the di...

Explain the direct and indirect effects of lime application The direct and indirect effects of lime application to acid soils generally are increased crop growth, although thei

Baffled tank with a six blade turbine agitator, The diagram below shows a b...

The diagram below shows a baffled tank with a six blade turbine agitator: FIGURE 1 (a)    Is a side view (b)   Is a bottom view (c)    Gives dimensions of the tu

Explain specific defence mechanism, Explain Specific Defence Mechanism ...

Explain Specific Defence Mechanism In the section on white blood cells, we learnt that whenever a germ or infection enters our body, the WBCs snap to attention and destroy the

Explain sinus bradycardia - electrocardiogram, Explain Sinus Bradycardia - ...

Explain Sinus Bradycardia - Electrocardiogram If the SA node discharge rate is slow, the heart rate is slow. ECG is normal in every respect except that the heart rate at rest i

First aid procedure for unconscious casualties, FIRST AID PROCEDURE FOR UNC...

FIRST AID PROCEDURE FOR UNCONSCIOUS CASUALTIES : Let us now discuss the first aid procedure for unconscious casualties. The common causes of unconsciousness in a laboratory accide

Objectives of unserviceable and obsolete items, Objectives After you do...

Objectives After you do this exercise, you should be able to 1. Prepare a list of unserviceable and obsolete items to be disposed of, after 2. Indicating the reserve pric

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