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Health Chapter 3
The Nervous System
33
Other
9th Grade
10/09/2012

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Term
Neurons
Definition
The nerve cells of the body
Term
Chemoreceptors
Definition
The nerve endings which are sensitive to chemicals
Term
Sensory Neurons
Definition
The Neurons that transmit information regarding pain and the senses to the central nervous system
Term
Astigmatism
Definition
An abnormally shaped cornea that may cause a focusing problem
Term
Brain Stem
Definition
All nerve fibers that connect the brain and the spinal cord pass through this
Term
Therm- or thermo- refers to this
Definition
Heat
Term
Sclera
Definition
The tough outermost layer of the eye (the white of the eye)
Term
Retina
Definition
The thin layer of light-sensitive nerve cells at the back of the eye
Term
Cerebrum
Definition
The largest part of the brain, sonsisting of two hemispheres
Term
Spinal Cord
Definition
The thick bundle of nerve fibers through which the brain communicates with the body
Term
Motor Neurons
Definition
refer to signals from the CNS and are responsible for information processing by the brain and spinal cord
Term
Brain
Definition
the most important and comples part of the nervous system
Term
Somatic Nervous System
Definition
Responsible for functions that you can control
Term
Sclera
Definition
Ther white of the eye
Term
Cornea
Definition
The transparent portion at the front of the eye
Term
Iris
Definition
The colored part of the eye
Term
Lens
Definition
The part of the eye that focuses the rays of light which pass through it. It is located just behind the iris
Term
Eardrum
Definition
The thin membrane that is stretched tightly across the end of the auditory canal
Term
Auditory Canal
Definition
The outer ear consists of a sound-gathering trumpet and a short tume
Term
The suffix -cide
Definition
means killing
Term
Cochlea
Definition
The snail-shaped chamber of the inner ear
Term
Stress
Definition
The challenges that face us in life and our responses to them
Term
Auditory Nerve
Definition
Nerve impulses from the cochlea to the brain are transmitted by the auditory Nerve
Term
Bulimia
Definition
The eating disorder characterized by binge eating and purging
Term
Anorexia nervous
Definition
The eating disorder which mainly affects females
Term
Decibels
Definition
Units rating the loudness or intensity of sounds
Term
Phobias
Definition
The best-known type of anxiety disorders
Term
Nerve deafness
Definition
Can result in a form of partial or complete hearing loss
Term
Middle ear
Definition
A small, hollow chamber within the temporal bone of the skull
Term
The suffix -ia
Definition
means condition
Term
Frontal lobes
Definition
Associated with personality, judgement, and self-control
Term
Right side of the brain
Definition
Credited with creative work like painting or sculpting
Term
Cerebellum
Definition
The portion of the brain responsible for learned movements such as putting a golf ball
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