vocab 35

uniquely suited to perform a particular fuction

glands and tissues that cover interior and exterior body surfaces

provides support and connects its parts

transmits nerve impules throughout the body

enables the body to move

keeps things in balance

process in which a stimulus producesa respone that opposes the original stimulus

cell that carries a message throughout the nervous system

largest part in the neuron

carries impulses neurons to the cell body

the cell body

the surrounding membrane of the axon

reversal of charges across the cell membrane of a neuron (nerve impulse)

electrial charge across the cell membrane of a resting neuron

minimum level of stimulus that is required to activate a neuron

location in which a neuron can transfer an impulse to another cell

are chemicals used by a neuron to transit an impulse across a synapse to another cell

the connective tissue that surrounds the brain and spinal cord

fluid in the space between that meninges that acts as a shock absorber. protects nervous system

that largest and most prominent region of the human brain

the second largest region of the brain

connects the brain and the spinal cord

receives messages from all of the sensory receptors throughout the body then relays the message to the proper region

quick, automatic response to a sitmulus

includes a sensory receptor, sensory neuron, motor neuron, and effector

react to a specific stimulus such as light or sound by sending impulses

the middle of the iris

behind the iris changes shape tp help eye focus

innermost layer of the eye

are extremely sensitive to light but do not distinguish colors

are less sensitive then rods but do respond to differnt colors and lights

fluid-filled part of the inner ear, sends nerve impulses to the brain

two tiny sacs located behind the monitor the position of your body

the snese organ that detects taste

any substance, other then food that changes the structure or function of the body

increses the actions regulated by the nervous system

decrease the rate of functions regulated by the brain

is a group of birth defects caused by the effects of alcohol on the fetus

can be defined as the intentional misue of any drug for nonmedical reasons

uncontrollable dependence on a drug

is the control cents for recognition and analysis of hunger thirst fatigue anger and body temperature