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ch. 10-17 uma

nervous system & the senses

QuestionAnswer
pertaining to the muscle nerves myoneural
branching projections that conduct impulse to cell body of neurons dendrites
large interlacing network of nerves. EX. lumbosacral, cervical, and brachial plexuses plexus
inability to speak aphasia
x-ray record of the spinal cord myelogram
abnormal sensation of tingling or pricking paresthesia
a highly malignant brain tumor glioblastoma
(stroke) The sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is impaired by blockage or rupture of an artery to the brain. cerebrovascular accident
Protrusion of the membranes that cover the spine but some of the spinal cord itself through a defect in the bony encasement of the vertebral column. The bony defect is spina bifida. meningomyelocele
lack of normal sensation. absence of sense of touch or pain anesthesia
an eye inflammation commonly called "pinkeye" is conjunctivitis
nearsightedness myopia
snailed shaped, spirally wound tube in the inner ear; contains hearing-sensitive receptor cells. cochlea
progressive damage to the macula of the retina macular degeneration
middle, vascular layer of the eye, between the retina and the sclera. choroid
transparent, biconvex body behind the pupil of the eye. it bends light rays to bring them in to focus on the retina lens
soft, jelly-like material behind the lens in the vitreous chamber; helps maintain the shape of the eyeball. vitreous humor
structure surrounding the lens that connects the choroid and iris. ciliary body
central opening of the eye, surrounding by the iris, through which light rays pass. it appears dark. pupil
special magnifying lenses also permit examination of the fundus tonometry
neurotransmitter chemical released at the ends of the nerve cells acetylcholine
intense burning pain following injury to a sensory nerve causalgia
fainting; sudden and temporary loss of consciousness caused by inadequate flow of blood to the brain. syncope
collection of spinal nerves below the end of the spinal cord cauda equina
is a collection of blood on the surface of the brain. subdural hematoma
inflammation of nerve root (spinal nerves). result in pain and loss of function radiculitis
all four extremities are affected. injury is at the cervical level of the spinal cord quadriplegia
space through which a nervous impulse traves between nerve cells or between nerve and muscle or glandular cells synapse
reading, writing, and learning disorders dyslexia
fibrous layer of clear tissue that extends over the anterior portion of the eye and is continuous with the white of the eye cornea
impairment of vision due to old age presbyopia
defective curvature of the cornea or lens of the eye astigmatism
inflammation of the middle ear otitis media
sensation of noises (ringing, buzzing, whistling, booming) in the ears tinnitus
delicate membrane lining the undersurface of the eyelids and covering the anterior eyeball conjunctiva
light-sensitive nerve cell layer of the eye containing photoreceptor cells (rods and cones) retina
tough, white outer coat of the eyeball sclera
pigment layer that opens and closes to allow more or less light into the eye iris
mental decline and deterioration. dementia
auricle; flap of the ear pinna
a surgical procedure in which a small incision is made in the eardrum myringotomy
sensation of irregular or whirling motion either of oneself or of external objects vertigo
surgical reconstruction of the bones of the middle ear with reconnection of the eardrum to the oval window tympanoplasty
removal of the stapes (third bone of the middle ear) stapedectomy
waxy substance secreted by the external ear; also called earwax cerumen
part of the brain responsible for coordinating muscle movements and maintaining balance cerebellum
what disease is characterized by a shuffling gait parkinson disease (parkinsonism)
what are photosensitive receptor cell of the retina called? cones
Created by: triciamari3ann