| A | B |
|---|
| reflex | Automatic involuntary response to a specific stimulus |
| interneurons | The simplest reflex arcs have no _______. |
| stretchreceptor | Sensory receptor in a muscle that stimulates the stretch reflex |
| polysynaptic | A reflex arc with at least one interneuron |
| autonomic | Branch of nervous system that controls cardiovascular and digestive systems |
| sympathetic | "Fight or flight" division of nervous system |
| parasympathetic | "Rest and digest" division of nervous system |
| peripheralnervoussystem | Links CNS with the rest of the body |
| monosynaptic | A reflex arc with no interneurons |
| autonomic | Branch of PNS that controls cardiovascular, respiratory and digestive systems |
| brain | This organ of the nervous system becomes smaller as you get older |
