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)

Explain tidal volume and inspiratory reserve volume, Explain Tidal Volume a...

Explain Tidal Volume and Inspiratory Reserve Volume Tidal Volume (TV):   It is the volume of air that is taken in or given out during quiet breathing. The volume 1s about 500

Explain bi-caval anastomosis teclznique, Explain Bi-caval Anastomosis Teclz...

Explain Bi-caval Anastomosis Teclznique This is the currently referred technique. In presuming the donor heart, more of SVC is dissected and retained. The length of IVC retaine

Define glucose and fructose - abnormal constituents of urine, Define Glucos...

Define Glucose and Fructose - Abnormal Constituents of Urine Abnormal Constituents of Urine The detection of abnormal constituents in urine indicates the presence of certa

State about the lateritic soils, State about the Lateritic soils Later...

State about the Lateritic soils Lateritic soils formed at high levels have a pale red colour, have high gravel content and are poor in all fertility constituents.  Those forme

Experiment of making a model of a simple flower, Experiment of Making a mod...

Experiment of Making a model of a simple flower By Using of modelling clay, coloured paper and toothpicks make 3D-dimensional models representing the parts of a typical flower.

Physico-chemical properties of vitamin e, Physico-chemical properties of vi...

Physico-chemical properties of vitamin E are as follows: a)  Tocopherols are yellow, oily liquids. b)  They are freely soluble in fat solvents. c)  The  compounds  are

Lights, how can i solve the problems

how can i solve the problems

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?

Burns - first aid treatment of localized injuries, Burns : There are two t...

Burns : There are two types of burns which we are to discuss: 1) Chemical 2) Thermal Chemical burns have already been discussed in Sec. 16.7; so we shall discuss thermal

Reactions of carboxylic group, Reactions of Carboxylic Group Salt  fo...

Reactions of Carboxylic Group Salt  formation:   In alkaline medium, XOOH  group reacts with metal hydroxide to form amino acid salts.

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