Nervous System Quiz

Picks up internal or external stimuli and converts it into a nerve; then sends it to the Interneuron

Sensory neuron Interneuron Motor neuron

The brain/spinal cord. Takes impulse and interprets it. Decides if further action should be taken, then sends message, if necessary to the motor neuron

Takes impulse form Interneuron and sends it to a muscle or gland (effector) The muscle or gland contracts on response or a gland releases a hormone

Stimulus, receptor, sensory neuron, interneuron, motor neuron, effector

Receives info Responds to info Maintains homeostasis; a steady rate where our body’s function best

What causes the nervous system Internal or external

What receives the stimulus If external stimulus, the receptor is a sense organ (eyes, ears, ect.)

What responds to the stimulus ALWAYS a muscle or gland

Nerve cell- carries messages throughout body

Electrical to chemical signal that travels from one neuron to another

Dendrite, cell body, axon, axon tips, synapse

• protects axon - speeds up the impulse

The impulse hops into this after going over the myelin

Takes signals to cell body

Takes signals/impulses away from cell body

A chemical released from the axon tips that helps the impulse travel to another neuron or muscle/gland Impulse carried by neuron is electrical Impulse carried through synapse is chemical