Muscles, Nerves, Sense Organs

Terms	Definitions
deltoid	triangular shoulder muscle that abducts the arm and is used as an injection site
biceps brachii	upper arm muscle that flexes the lower arm
triceps brachii	upper arm muscle that extends lower arm
pectoralis major	upper chest muscle that adducts and flexes upper arm
muscular dystrophy	group of inherited diseases that lead to chronic progressive muscle atrophy
myasthenia gravis	chronic condition in which nerve impulses are not transmitted properly to the muscles
cerebrum	large part of the brain that controls the senses and thinking
cerebellum	the "little brain" attached to the rear of the brainstem; it helps coordinate voluntary movement and balance
medulla oblongata	the base of the brainstem; controls heartbeat and breathing
dura mater	outermost brain covering
arachnoid membrane	which resembles a spider web, is the second layer of the meninges and is located between the dura mater and the pia mater
pia mater	thin, delicate inner membrane of the meninges
cerebrovascular accident	stroke
epilepsy	disorder affecting the central nervous system, characterized by recurrent seizures
cerebral palsy	a loss or deficiency of motor control with involuntary spasms caused by permanent brain damage present at birth
Parkinson's disease	a progressive disease that destroys brain cells and is identified by muscular tremors, slowing of movement, and partial facial paralysis
sclera	white of eye
iris	a ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening
cerumen	ear wax
tympanic membrane	The eardrum. A structure that separates the outer ear from the middle ear and vibrates in response to sound waves.