The Nervous SystemThe Nervous SystemBy:By: Paige StegnePaige Stegne

GradeGrade 55FessendenFessenden SchoolSchool

Important Parts of the Important Parts of the Nervous SystemNervous System

spinal Cordspinal Cord brainbrain facial Nervesfacial Nerves sciatic Nervessciatic Nerves sensory Nervessensory Nerves mixed Nervesmixed Nerves motor Nervesmotor Nerves

The Spinal CordThe Spinal Cord structure:structure: made of a bundle of nerve fibres (called axons)made of a bundle of nerve fibres (called axons) function:function: basically the information highway of the human bodybasically the information highway of the human body messages are sent back and forth to the brain and other parts of the messages are sent back and forth to the brain and other parts of the

bodybody info:info: includes touch, temperature, joint position and signals telling includes touch, temperature, joint position and signals telling

muscles to movemuscles to move

The BrainThe Brain structure:structure: pink, jelly-like substance folded over itself to maximize its pink, jelly-like substance folded over itself to maximize its

surface area surface area function:function: controls everything in your bodycontrols everything in your body cells in the brain control heart rate, body temperature and cells in the brain control heart rate, body temperature and

respirationrespiration hormone control of the renal glands, thyroid, reproductive organs hormone control of the renal glands, thyroid, reproductive organs

and kidneysand kidneys

Sciatic NervesSciatic Nerves branches of the Lumbar nervesbranches of the Lumbar nerves longest and largest nerves in the human bodylongest and largest nerves in the human body supply nerve impulses to the muscles and skin in hip joints, thighs, supply nerve impulses to the muscles and skin in hip joints, thighs,

feet, lower legs and most of the skin below the kneefeet, lower legs and most of the skin below the knee

Facial nervesFacial nerves the seventh cranial nervethe seventh cranial nerve begins in the spinal cordbegins in the spinal cord branches into the face, neck, outer ear, and salivary glandsbranches into the face, neck, outer ear, and salivary glands performs both motor and sensory functionsperforms both motor and sensory functions branches from the brain stem upbranches from the brain stem up divides into smaller nerves to reach the face, neck, salivary glands divides into smaller nerves to reach the face, neck, salivary glands

and outer earand outer ear controls the muscles of the neck, facial expressions, and muscles controls the muscles of the neck, facial expressions, and muscles

on the foreheadon the forehead reports taste from front 2\3 of the tongue reports taste from front 2\3 of the tongue carries sensations from the outer earcarries sensations from the outer ear

Relationships with other Relationships with other body systemsbody systems

relatesrelates to to the the muscularmuscular system and the system and the skeletalskeletal system system skull protects the brainskull protects the brain spine protects the spinal cordspine protects the spinal cord nerves send messages to the muscles to tell you if something is nerves send messages to the muscles to tell you if something is

wrong or hurtwrong or hurt in thein the cardiovascular systemcardiovascular system, , the nervous system modulates heart the nervous system modulates heart

rate, contractile strength and vascular tone rate, contractile strength and vascular tone

Healthy EffectsHealthy Effects have have healthy fatshealthy fats with with vitamins D and B12vitamins D and B12 vitamin Bvitamin B potassiumpotassium sodium ionssodium ions practise writing practise writing everydayeveryday to to exercise motor and sensory neuronsexercise motor and sensory neurons

in your brainin your brain eateat tomatoes, carrots, peppers and leafy green vegetablestomatoes, carrots, peppers and leafy green vegetables

Harmful EffectsHarmful Effects alcoholalcohol=BAD=BAD drugsdrugs=BAD=BAD tobaccotobacco= BAD= BAD smokingsmoking=BAD=BAD these mess with your brainthese mess with your brain these things are NOT good for the nervous systemthese things are NOT good for the nervous system

Diseases of the Nervous Diseases of the Nervous SystemSystem

spinal tumors:spinal tumors: tumors that involve the spinal cord or vertebral columntumors that involve the spinal cord or vertebral column can either be can either be primary or secondaryprimary or secondary primary:primary: originating from the spinal cordoriginating from the spinal cord secondarysecondary: : spreading to the spinal cord from other parts of the spreading to the spinal cord from other parts of the

bodybody can cause cases of a can cause cases of a metastatic cancermetastatic cancer epilepsy:epilepsy: a condition characterized by recurring seizuresa condition characterized by recurring seizures seizures are abnormal over activity of the cells in the brain which seizures are abnormal over activity of the cells in the brain which

affect variable regions of the central nervous system; mostly affect variable regions of the central nervous system; mostly forebrainforebrain

any injuryany injury to the brain can lead to seizures and sometimes epilepsyto the brain can lead to seizures and sometimes epilepsy

The most Interesting facts The most Interesting facts about the Nervous Systemabout the Nervous System divided into 2 parts-divided into 2 parts- central central nervous system and the nervous system and the peripheral peripheral

nervous systemnervous system nerves can pass messages in less than a fraction of a secondnerves can pass messages in less than a fraction of a second there are there are MILLIONSMILLIONS of nerve cells in the human body of nerve cells in the human body the brain alonethe brain alone has about has about 100 million neurons100 million neurons, which lined up , which lined up

would make awould make a 600 mile-long line600 mile-long line thirty-one pairs of nerves of nerves originate from the spinal cordthirty-one pairs of nerves of nerves originate from the spinal cord in humansin humans, the , the right side of the brainright side of the brain controlscontrols the the left side of left side of

the body, and vice versathe body, and vice versa

Even MORE Interesting Even MORE Interesting FactsFacts

the weight of the the weight of the brainbrain in an in an average adult femaleaverage adult female is is 1275 grams1275 grams the brain looks like athe brain looks like a giantgiant, wrinkled walnut, wrinkled walnut the weight of thethe weight of the brain brain in an in an average adult maleaverage adult male is is 1375 grams1375 grams

My ReferencesMy References www.innerbody.comwww.innerbody.com www.answers.comwww.answers.com www.buzzle.comwww.buzzle.com www.nervoussystemdieseases.comwww.nervoussystemdieseases.com www.wikipedia.orgwww.wikipedia.org The Human Body by S. BrunoThe Human Body by S. Bruno