PP 1016-1024

sensory – sense organs/receptors to CNS.

motor – carry information from CNS to muscles and glands

interneurons – connect sensory and motor and carry impulses between them.

An electrical impulse Resting potential: inactive due to

“negatively” charged inside as compared to impulse

Action potential: helps the transmission of an electrical impulse by making inside more “positive”

When the impulse reaches terminal neurotransmitters are released into synaptic cleft

Drug: chemical compound that affects the body

Prevent re-uptake of neurotransmitters

Over stimulation of nervous system

Mimicking neurotransmitters

Neuron that detects stimuli.

Detect pressure and movementSense: Hearing and touch

Detect temperature

Detect tissue damage

Respond to chemicalsSense: Smell and taste

Respond to variation in light

Sense: sight