Across
- 3. made up of the brain and spinal chord
- 4. part of the peripheral nervous system that's responsible for regulating involuntary body functions, such as blood flow, heartbeat, digestion, and breathing
- 5. part of the peripheral nervous system associated with the voluntary control of body movements via skeletal muscles
- 6. collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.
Down
- 1. consists of nerves and ganglia outside of the brain and spinal chord
- 2. chemical substances that act like messenger molecules in the body