| A | B |
|---|
| Autonomic Nervous System | the system of nerves that carries instructions from the CNS to the body's smooth muscles, cardiac muscle, and glands |
| Sensory Nervous System | the system of nerves that carries information from the body's receptors to the CNS |
| Motor Nervous System | the system of nerves that carries instructions from the CNS to the skeletal muscles |
| neurons | composed of cell bodies, dendrites, and axons |
| neuroglia | supports the neurons by performing various tasks so the neurons can do their job |
| dendrites | carry signals towards a neuron's cell body |
| axons | carry signals away from a neuron's cell body |
| synapse | a gap between the axon of a neuron and the receiving cell |
| neurotransmitters | chemicals that travel across the synapse, transmitting a signal from the end of an axon to a receiving cell |
| Central Nervous System | composed of the brain and the spinal cord |
| Peripheral Nervous System | composed of all nerves running off of the spinal cord |
| gray matter | composed mostly of neuron cell bodies |
| corpus callosum | allows allows the two hemispheres of the brain to communicate |
| cerebellum | controls the movement of voluntary muscles |
| cerebrum | controls most high-level thinking skills such as reasoning |
| sympathetic division | the part of the autonomic nervous system that speeds up the heart rate |
| parasympathetic division | the part of the autonomic nervous system that slows the heart rate |
| taste buds | sensitive to salty, bitter, sweet, sour, and umami |
| cochlea | converts the rocking motion of the ossicles into electrical signals that the brain interprets as sound |
| ciliary muscle | deforms the lens in the eye to adjust focus |
