Millions of nerve signals enter your brain every single second of your life.
The nervous system is your body's control and communication system, made up of nerves and the brain. Nerves are your body's hot-lines, carrying instant messages from the brain to every organ and muscle - and sending back an endless stream of data to the brain about what is going on both inside and outside your body.
The peripheral nervous system (PNS) is made up of the nerves that branch out from the CNS to the rest o fthe body.
The Nervous System: A True Book (True Books-Health)
Amazon Price: $6.95 (as of 12/19/2009)
There are simple diagrams of the eye, ear, nose, and tongue, and explanations about how nerves "like wires" carry messages to the brain.
The nerves of the PNS are made up of long bundles of nerve fibers, which in turn are made from the long axons (tails) of nerve cells, bound | together Iike the wires in a telephone cable.
In many places, sensory nerves (which carry sense signals from the body to the brain) run
alongside motor nerves (which carry the brain's ^ commands telling muscles to move).
Some PNS nerves are as wide as your VI thumb. The longest is the sciatic, which runs from the base ofthe spine to the knee.
Human Body: An Illustrated Guide to Every Part of the Human Body and How It Works
Amazon Price: $13.60 (as of 12/19/2009)
The ANS is split into two complementary (balancing) parts - the sympathetic and the parasympathetic. The sympathetic system speeds up body processes when they need to be more active such as when the body is exercising or under stress. The parasym pathetic slows them down.
New Featured Lenses
-
The REAL Seven Wonders of the World
-
A group of students were asked to list what they thought were the present "Seven Wonders of the World." Though there were some disagreements, the following received the most votes:
- Feedmysearch needs your opinion, help and advice
- Dear feedmysearch user, Feedmysearch would require some serious server upgrade and a bit of development to be back online. However it seems hard to monetize and without monetisation, no future ! You ‘re welcome to express any opinion, advice, partnership proposal ! And feel free to forward it to whoever you think might have a say. [...]
Fetching new data from eBay now... please stand by
Magic School Bus Journey into the Human Body Science Kit
Amazon Price: $24.00 (as of 12/19/2009)
Human Body Anatomy Model
Amazon Price: $17.92 (as of 12/19/2009)
You Explore It: Human Body Kit
Amazon Price: (as of 12/19/2009)
Human Body Placemat
Amazon Price: $2.95 (as of 12/19/2009)
The Human Body Game in Spanish and English
Amazon Price: $17.99 (as of 12/19/2009)
Fetching RSS feed... please stand byOnly The Best
Handpicked Books
Uncover the Human Body: An Uncover It Book by Luann Colombo
Fabulous buy for kids 5+, in my opinion, because e more...2 points
First Human Body Encyclopedia (Dk First Reference Series) by DK Publishing
This is the only kids encyclopedia I own and we lo more...0 points
Human Body: A Visual Guide by Beverly McMillan
ideal for biology buffs aged 12 and beyond0 points
Teaching Outside the Box: How to Grab Your Students By Their Brains by LouAnne Johnson
Excellent, pragmatic approaches for building a cla more...0 points
Explore related pages
Learn About Seals and Sea Lions- There are 33 species of seals, sea lions, fur seals and walrus that populate the...
Learn About The Immune System- Inside your body there is an amazing protection mechanism called the immune syst...
Learn About The Lymphatic System- The lymphatic system in most animal species is the most important physiological...
Learn About The Skeletal System
- This system has 206 bones and associated cartilage, tendons, and ligaments. Beca...
Learn About The Circulatory System- Your circulation is the system of tubes called blood vessels which carries blood...
Learn About The Endocrine System
- The endocrine system is made up of glands that produce and secrete hormones. The...
