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Drugs and Special Senses
Hunsicker Chapter 28
22
Science
10th Grade
01/31/2008

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Term
Tolerance
Definition
More drugs are needed to produce the same effect
Term
Dopamine
Definition
Brain neurotransmitter; creates sense of pleasure, well being
Term
Retina
Definition
Inner layer of eye; location of photoreceptors
Term
Ossicles
Definition
Three small bones of middle ear; transmit sound from air to liquid
Term
Addiction
Definition
Uncontrolled dependence upon a drug
Term
Inhalants
Definition
Volatile solvents(organic solvents, benzene, aerosols, glue, nitrites)
Term
Hallucinogens
Definition
User hears, sees thins non existent; distorts reality; confusion (LSD, peyote)
Term
Cochlea
Definition
Coiled tube of inner ear; houses ORGAN of CORTI (fluid motion → hearing)
Term
Chemoreceptors
Definition
Sensory receptors sensitive to chemicals (nose, taste buds)
Term
Withdrawal
Definition
Symptoms resulting when drug is not taken by an addicted person
Term
Photoreceptors
Definition
Sensory receptors sensitive to light (retina)
Term
Ecstasy
Definition
Stimulant; increases energy, emotional attachment; hallucinogenic
Term
Cornea
Definition
Transparent region of SCLERA; helps focus light to lens
Term
Pupil
Definition
Dark opening in center of IRIS; diameter regulated by ciliary muscles (iris)
Term
Narcotics
Definition
Opiates (derived from Opium poppy) block pain (morphine, codeine, heroin)
Term
Choroid
Definition
Middle region of eye; supplies blood nurishment to other regions
Term
Semicircular Canals
Definition
Three arching tubes of inner ear; fluid motion → balance
Term
Astigmatism
Definition
Mishapened lens or cornea; distorts image to retina
Term
Marijuana
Definition
Called weed; hemp derivative; mind altering; long term use → memory loss
Term
Stimulants
Definition
Increases activity in CNS (cocaine, caffeine, chocolate, methamphetamine)
Term
Cones
Definition
Photoreceptors responding to RED, BLUE, and GREEN (day vision)
Term
Rods
Definition
Photoreceptors responding to SHADES of GRAY (night vision); very sensitive
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