click below
click below
Normal Size Small Size show me how
Ch.3
PNS
Term | Definition |
---|---|
Somatic nervous system | 1. includes spinal and cranial nerves. 2. receives sensory information from sensory organs 3. controls movements of skeletal muscles 4. controls functions accompanying arousal and energy expenditure |
Autonomic nervous system | 1. includes sympathetic and parasympathetic divisions 2. regulates smooth muscle, cardiac muscle, and glands 3. controls functions that occur in a relaxed state |
Brain and spinal cord communicate to the rest of the body | 1. Spinal nerves 2. Cranial nerves |
Afferant axon | bringing sensory information to the CNS |
Efferant axon | Axon conveying motor commands to muscle and glands from the CNS |