Neuron Quiz

Path of an impulse to brain/spinal cord:

• Stimulus (dendrites of sensory neuron) → cyton → axon → terminal branch → synapse → dendrites of next neuron  …  until it reaches brain or spinal cord

• Stimulus (dendrites of sensory neuron) → synapse →axon →terminal branch → cyton → dendrites of next neuron ... until it reaches brain or spinal cord

• Stimulus (dendrites of sensory neuron) → axon →cyton→dendrites of next neuron → synapse →terminal branch ...until it reaches brain or spinal cord

• Stimulus (dendrites of sensory neuron) → dendrites of next neuron → terminal branch → synapse → cyton →axon ... until it reaches brain or spinal cord

control & coordination of life functions and activities

electrical system, brain, spine, and nerves found in multicellular organisms

 chemical system, hormones found in multicellular organisms

change in the internal or external environment that triggers an impulse which ends in a response

“message”; electrochemical charge sent along a nerve cell (neuron)

structures that detect stimuli, ex) sense organs

 reaction to a stimulus, carried out by the effectors

 organs of response, include muscles & glands

nerve cell, functional unit of nervous system, a bundle of neurons is a nerve