Nervous System and Responses

Front

Nervous system function

Back

Controls and coordinates the operation of all systems.

Front

What is a reflex action?

Back

-Involuntary action

-No conscious control

Front

Central nervous system role

Back

Sends nerve impulses to the muscles in response to stimuli.

Front

Name the receptors in the eye

Back

Photoreceptors

Front

Describe the reflex arc

Back

-Receptor picks up stimulus, stimulated

-Nerve impulses trasmitted through sensory neurone

-Relay neurone

-Motor neurone

-Effector, muscles contract

Front

Describe the knee jerk reflex

Back

-Receptor in the leg picks up stimulus, stimulated

-Nerve impulses trasmitted through sensory neurone

-Relay neurone in the spinal cord

-Motor neurone

-Effector, muscles in the leg contract and jerk

Front

Central nervous system

Back

Brain and spinal cord

Front

Function of sensory neurone

Back

Transmits nerve impulses from receptors to relay neurones.

Front

Function of relay neurone

Back

Transmits nerve impulses from sensory neurones to motor neurones.

Front

Relay neurones found in

Back

Brain and spinal cord (CNS)