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A&P CH10 key terms

A&P CH10 Somatic and Special Senses

QuestionAnswer
accomodation adjustment of lens of eye for close or distant vision
ampulla an expansion at the end of each semicircular canal that contains a crista ampullaris
chemoreceptor a receptor that is stimulated by the binding of certain chemicals
choroid middle, vascular layer of the eye
cochlea coiled tube in the inner ear
cornea transparent anterior portion of the outer layer of the eye wall
dynamic equilibrium maintenance of balance when the head and body are suddenly moved or rotated
iris colored, muscular part of the eye
labyrinth the system of connecting tubes within the inner ear, including the cochlea, vestibule, and semicircular canals
macula lutea a yellowish depression in the retina of the eye that is associated with acute vision
mechanoreceptor a sensory receptor that senses mechanical stimulation, such as changes in pressure or tension
pain receptor sensory nerve ending associated with the feeling of pain
photoreceptor a sensory receptor sensitive to light energy; rods and cones
projection process by which the brain causes a sensation to seem to come from the region of the body being stimulated
referred pain pain that feels as if it is originating from a part other than the site being stimulated
refraction a bending of light as it passes between media of different densities
retina inner layer of the eye wall that contains the visual receptors
rhodopsin light-sensitive pigment in the rods of the retina; visual purple
sclera tough, outer protective layer of the eye
sensory adaptation sensory receptors becoming less responsive after constant repeated stimulation
static equilibrium the maintenance of balance when the head and body are motionless
thermoreceptor a sensory receptor sensitive to temperature changes; heat and cold receptors
Created by: djhockett5