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Houston Ch. 18 Sci

Ch. 18 Review for Science Test

cerebrum controls thinking and interprets information from sense organs
cerebellum controls body movements and helps maintain balance
medulla controls digestion and activity of glands and involuntary muscles
brain stem/medulla made up of nerves from other two brain parts and connects the brain to the spinal cord
endocrine glands have no ducts
testosterone a male reproductive hormone
insulin hormone that controls sugar in the blood
job of brain to receive, interpret, and react to messages in the body
cerebrum largest part of the brain
reflexes controlled by the brain
reflex arc body's reaction that does not involve the brain (path=receptor to spinal cord to muscle)
synapse the gap between one cell and the dentrite of another
path substances from endocrine glands travel from glands into blood vessels
sense organ a special organ that receives and processes stimuli from the environment
Names of sense organs: skin, eyes, mouth/nose, ears, nose
skin detects temperature
optic nerve carry nerve signals from the retina in the eye to the brain
outer ear gathers sounds
cochlea changes vibrations into nerve signals in the ear
depressant drug that slows down the central nervous system
stimulant drug that speeds up the central nervous system
alcoholic dependent on alcohol
addiction an uncontrollable dependence on drugs
Created by: Ms.T