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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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.
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.
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.
Neocortex; Basal Ganglia; Amygdala; Hippocampus; Lateral Ventricles
Thalamus; Hypothalamus; Epithalamus; Third Ventricle
Tectum; Tegmentum; Cerebral Aqueduct
Cerebellum; Pons; Fourth Ventricle
Medulla Oblongata; Fourth Ventricle
In the skin
Around blood vessels
In the eye
In the stomach
Of the heart
Divided into 3 parts
Sympathetic nervous system
Parasympathetic nervous system
Enteric nervous system
“Fight or Flight” response
Emergencies that cause stress enable this response
Either stay and fight or take flight (run away)
“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.
It's not a normal part of aging; it attacks the brain
The person will loose normal intellectual brain functions
It's symptoms include:
Problems with social interaction
Obsessive Compulsive Disorder
Anxiety disorder that is characterized by recurring thoughts and repetitive behaviors
Checking or cleaning repeatedly
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
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
Low-medium doses cause
Reduced blood pressure
Disruption in attention
An altered sense of time and space
High doses cause
Factors that influence how alcohol will effect your body
Amount of food in your system
Other drugs or medicines taken
In low doses
In medium doses
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