| A | B |
|---|
| cerebrum | largest part of the brain, coordinating movement, thought, reasoning, and memory; includes the cerebral cortex and the white matter beneath it |
| cerebral cortex | layer of gray matter on the surface of the cerebrum that receives information and generates responses |
| cerebellum | part of the brain that coordinates and regulates all voluntary muscle movement and maintains posture and balance |
| brain stem | structure that connects the brain to the spinal cord and controls breathing and heartbeat |
| reflex arc | nerve pathway in which an impulse crosses only two synapses before producing a response |
| somatic nervous system | division of the peripheral nervous system that transports signals from the brain to the muscles that produce voluntary movements |
| autonomic nervous system | division of the peripheral nervous system that controls involuntary functions |
| sympathetic nervous system | part of the autonomic nervous system that prepares the body for action and stress |
| parasympathetic nervous system | division of the peripheral nervous system that calms the body and helps the body to conserve energy |
