any change or signal in the environment that can make an organism react.
what your body does in reaction to a stimulus
the cells that carry information through your nervous system.
the message that a neuron carries.
carry impulses toward the neuron's cell body.
carries impulses away from the cell body.
a bundle of nerve fibers.
three types of neurons
sensory neurons, interneurons, and motor neurons.
picks up stimuli from the internal of external environment and converts each stimulus into a nerve impulse.
a neuron that carries nerve impulses from on neuron to another.
sends an impulse to a muscle or gland, and the muscle or gland reacts in response.
the junction where on neuron can transfer an impulse to another structure called a .