| A | B |
|---|
| C.N.S | brain/ spinal cord |
| P.N.S | somatic &autonomic nerves |
| SOMATIC NERVES | lead to muscle, conscious control |
| SENSORY NERVES | relays info. to C.N.S |
| MOTOR NERVES | relays info from C.N.S to effectors |
| AUTONOMIC NERVES | motor nerves, maintain homeostasis |
| INTERNEURON | carry impulses within C.N.S |
| RECEPTOR | senses heat touch etc |
| DENDRITE | cell projections,carry impulses to cell |
| AXON | cell projection, info from cell |
| MYELIN | insulator for axons, enables regeneration |
| SCHWANN CELL | forms the myelin sheath |
| NODE OF RANVIER | gaps between myelin sheath |
| NEURILEMMA | membrane surroundin axon |
| REFLEX ARC | reflex occuring without brain involvement |
| NEURON | nerve cell |
