Peripheral nervous system (pns), Science

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

Posted Date: 9/28/2012 8:43:02 AM | Location : United States







Related Discussions:- Peripheral nervous system (pns), Assignment Help, Ask Question on Peripheral nervous system (pns), Get Answer, Expert's Help, Peripheral nervous system (pns) Discussions

Write discussion on Peripheral nervous system (pns)
Your posts are moderated
Related Questions
6579877+7643678999

What are the functions of insulin? 1. Promotes glucose transport into all cells of the body except brain. Rapid transport of glucose into the cells decreases the blood glucose

Sucrose is a non-reducing Sugar while Maltose and Lactose are reducing due to the presence of free Aldehydic Functional Group in them. In SUgar the Aldehydic Group of both Glucos

Freezing by Contact with a Cooled Gas Different methods are available for freezing by contact with cooled gas. These include: i) Cabinet Freezing: This method involves ci

What is electromechanical safety in Angiography? Is it considered in quality control of the system?

Apoenzyme :- The protein portion  of an enzyme requiring a cofactor for its reaction.

Describe the factors which decide the broad area of Scientific activity?

what is the process of komodo dragon when reproducing by parthenogenesis

what are good conductors of heat?why is advantages to have ventilators in houses at the top of walls?

Objectives After you have completed this exercise, you should be able to: 1.      Enlist all the fire extinguishers available in the labs and relate them to the type of fire