By aramis johnson and nate sommers
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By: Aramis Johnson And Nate Sommers. Nervous System. Why is it important?. Master Controller of your body. Translates thought into action. Regulates and maintains functions within your body. Components of Nervous System. CNS(Central Nervous System) Contains brain and spinal cord.

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Nervous System

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By aramis johnson and nate sommers

By: Aramis Johnson

And

Nate Sommers

Nervous System


Why is it important

Why is it important?

  • Master Controller of your body.

  • Translates thought into action.

  • Regulates and maintains functions within your body.


Components of nervous system

Components of Nervous System

CNS(Central Nervous System)

Contains brain and spinal cord.

PNS(Peripheral Nervous System)

Nerves that extend from brain and spinal cord.

Spinal nerves carry impulses to and from the spinal cord.

Cranial nerves carry impulses to and from the brain.


Nervous system

CNS

Sensory or afferent division has nerve fibers that transport impulses TO the CNS from receptors in the body.

Motor or efferent division carries impulses FROM the CNS to effector organs, muscles, and glands.

Somatic(SNS)


Nervous system

SNS

Allows voluntary control of our skeletal muscles also known as voluntary nervous system.

Not all skeletal muscle activity controlled by this system

Fibers control skeletal muscle reflexes.


Nervous system

It’s a brain.


Anatomy physiology

Anatomy & Physiology

Prosencephalon (Forebrain)

Telencephalon

Neocortex; Basal Ganglia; Amygdala; Hippocampus; Lateral Ventricles

Diencephalon

Thalamus; Hypothalamus; Epithalamus; Third Ventricle


Anatomy physiology ctd

Anatomy & Physiology (ctd.)

Mesencephalon (Midbrain)

Mesencephalon

Tectum; Tegmentum; Cerebral Aqueduct

Rhombencephalon (Hindbrain)

Metencephalon

Cerebellum; Pons; Fourth Ventricle

Myelencephalon

Medulla Oblongata; Fourth Ventricle


Ans autonomic nervous system

ANS (Autonomic Nervous System)

Regulates

Muscles

In the skin

Around blood vessels

In the eye

In the stomach

Of the heart

Glands

Divided into 3 parts

Sympathetic nervous system

Parasympathetic nervous system

Enteric nervous system


Sympathetic

Sympathetic

“Fight or Flight” response

Emergencies that cause stress enable this response

Either stay and fight or take flight (run away)


Parasympathetic

Parasympathetic

“Rest and Digest”

Non-emergencies enable this response

Allows us to rest (sleep, sit down, etc.) and digest food that we have eaten.

During this phase, our metabolism kicks in allowing digestion.


Diseases disorders

Diseases/Disorders

Alzheimer's Disease

It's not a normal part of aging; it attacks the brain

The person will loose normal intellectual brain functions

Called dementia


Diseases disorders1

Diseases/Disorders

Autism

It's symptoms include:

Communication problems

Repetitive movements

Problems with social interaction

Unknown cause


Diseases disorders2

Diseases/Disorders

Obsessive Compulsive Disorder

OCD

Anxiety disorder that is characterized by recurring thoughts and repetitive behaviors

Examples include:

Counting steps

Hand-washing

Checking or cleaning repeatedly


Diseases disorders3

Diseases/Disorders

Bipolar Disorder

Changes in moods, energy, and behavior

Also called Manic Depressive Illness

Has many symptoms

During the “High” stage the person may experience:

Excessive talking, reduced need for sleep, inflated self-esteem, etc.

During the “low” stage the person may experience

Loss of energy, agitation, and repeated thoughts of suicide or death


Diseases disorders4

Diseases/Disorders

Epilepsy

It is not contagious

People suffering from it are not crazy!!!!

Greek origin meaning “to seize or posses”

Prevents brain from interpreting and processing sensory intake

Prevents muscle control


Effects of drugs alcohol

Effects of Drugs & Alcohol

Marijuana

Low-medium doses cause

Relaxation

Reduced coordination

Reduced blood pressure

Sleepiness

Disruption in attention

An altered sense of time and space

High doses cause

Hallucinations

Delusions

Impaired memory

Disorientation


Effects of drugs and alcohol ctd

Effects of Drugs and Alcohol (ctd.)

Alcohol

Factors that influence how alcohol will effect your body

Age

Gender

Physical condition

Amount of food in your system

Other drugs or medicines taken


Effects of drugs and alcohol ctd1

Effects of Drugs and Alcohol (ctd.)

Alcohol

In low doses

Relaxing effect

Reduces tension

Impairs judgment

Slows reflexes

In medium doses

Slurred speech

Altered emotions

Drowsiness


Effects of drugs and alcohol ctd2

Effects of Drugs and Alcohol (ctd.)

Alcohol

High doses

Vomiting

Breathing difficulties

Unconsciousness

Coma


Effects of drugs and alcohol ctd3

Effects of Drugs and Alcohol (ctd.)

Chocolate

There is a chemical in chocolate that behaves like THC (delta-9-tetrahydrocannabinol) found in marijuana

Dark chocolate contains more of this chemical (anandamide) than milk chocolate

This chemical is already in your brain but breaks down quickly, chocolate makes this chemical break down slower causing us to feel “happy” longer


Hyperlinks

Hyperlinks

http://www.nimh.nih.gov/

http://faculty.washington.edu/


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