You’re Getting On My Nerves THE NERVOUS SYSTEM By: Candace Janis and Ashley Fisch.

You’re Getting On My Nerves

THE NERVOUS SYSTEM

By: Candace Janis and Ashley Fisch

Why is the Nervous System important?

• Control center of your body• Brain receives information from Nervous

System in order to perform actions• Without the Nervous System we could not

exist• We wouldn’t be able to perform everyday

functions without our nervous system such as; our hearts wouldn’t beat, our blood wouldn’t flow, we wouldn’t be able to walk, we wouldn’t be able to breathe, we basically would not be alive without our nervous system.

CNS, PNS, SNS, ANS, Sympathetic, Parasympathetic

Central Nervous System

•Consists of the brain and spinal cord

•The brain contains hundreds of trillions of “support cells”

•Nerve fibers (senses)•Motor nerve fibers•Sensory neurons run from stimulus receptors that inform CNS of stimuli•Connect CNS to sensory organs

Peripheral Nervous System

Somatic Nervous System

Part of nervous system concerned with the control of voluntary muscle

Portion of the Peripheral Nervous System that carries motor nerves to skeletal muscles.

Autonomic Nervous System

Part of vertebrate system that regulates involuntary actions:

Intestines

Heart

Glands

This nerve system is divided into the Sympathetic Nervous System and the Parasympathetic Nervous System

Sympathetic Nervous System

Has an active “pushing” function

Located to the Sympathetic Chain which attaches to the skin, blood vessels, and organs

Accelerates heart rate

Constricts blood vessels

Raises blood pressure

Parasympathetic Nervous System

Mainly relaxing function

Slows heart rate

Increases intestinal and gland activity

Relaxes sphincter muscles

Diseases and Disorders

Huntington Disease

Locked-in Syndrome

Wernicke Aphasia

Wilson Disease

Tourette Syndrome

Huntington DiseaseTend to fidget

Over months, develops into jerky involuntary movements

Progresses over 10-25 years

Leads to dementia

Sometimes leads to death from infection

High suicide rate

Locked-in SyndromeCaused by stroke, tumor or trauma to ventral part of rostral pons

Quadriplegic: Unable to speak or facial movements

Able to move eyes

Wernicke Aphasia

Two main components 1st impairment of comprehension of written and spoken language 2nd inability to speak substantive languageWhich is being unable to form some words correctlyHard to function in society because they cannot understand“Fluent or Sensory Aphasia”Lesions producing this disorder can be found in boundary regionof the temporal and parietal lobes on the dorsolateral surface of the left cerebral hemisphere.When this disorder is due to a stroke , there may be improvement to the point that the aphasia can no longer be found.

Wilson Dsease

Wilson Disease

“Hepatolenticular degeneration”

This is cause by inheritance of the mutated chromosome 13.This prevents the body from eliminating excess copper.Ceruloplasmin is reduced a great amount in this disorder.Too much copper in the system damages calls in liver and leadsto cirrhosis.Symptoms of the disease: a type of tremor in upper extremities,slow movement, and changes in temperament.People might become irritable, emotional, and may experience a decrease in mental capability.Treatment includes eliminating foods with copper.

Tourette SyndromeThis syndrome begins in childhood and shows through various forms of tics. 

These tics include: frequent, irregular movements of the head, neck, or shoulders;

more complex behaviors such as snorting, sniffing, and involuntary voice commands. 

As the syndrome progresses repetitive behaviors such as touching others,

obsessive-compulsive symptoms, and explosive involuntary cursing can be more common. 

Aggressive behavior and improper sexual impulses are the rarest and most severe expressions of the syndrome.

The cause of Tourette syndrome is not known, but it is believed to have a genetic component. 

Effects of Alcohol on the Nervous System

-A great absorption of alcohol causes a greater impairment to the brain and causes an individual to have a higher difficulty with normal motor functions-Alcohol is a Central Nervous System depressant-Alcohol reduces sensitivity to pain-Alcohol affects vision in the following ways: less sensitivity to color, lowers ability to differentiate light intensity, lower resistance to glaring, narrows vision

Effects of Cocaine

-Cocaine is a strong stimulant to Central Nervous System

-Cocaine may cause anxiety and restlessness

-Cocaine causes twitches, tremors, spasms, coordination problems, chest pain, nausea, seizures, respiratory arrest, and cardiac arrest

-Cocaine may cause alertness, watchfulness, impaired judgment, impulsiveness, and repeated actions

-Cocaine causes coordination and vision imparities

WORK CITEDhttp://www.argosymedical.com/medical_ani_sys/nervous.html

http://www.sci.uidaho.edu/med532/Disease_index.htm

http://www.medterms.com/script/main/art.asp?articlekey=2667

http://www.answers.com/topic/somatic-nervous-system

http://www.answers.com/topic/autonomic-nervous-system