Across
- 2. refractory period in which Na channels are open, so another stimulus cannot occur.
- 5. excitatory potentials that pass an electrical signal down the axon.
- 8. type of summation in which multiple weak impulses occur quickly in succession at one location.
- 9. cholinergic neurotransmitter that stimulates skeletal muscle contraction, mediates parasympathetic nervous system effects.
- 10. refractory period in which K channels are open and Na channels are closed, so another stimulus could occur if the signal was very strong.
- 11. postsynaptic potential which is hyperpolarizing; inhibits action potentials.
Down
- 1. potentials that can be inhibitory or excitatory to neurons.
- 3. type of summation in which multiple weak impulses contact the neuron at different sites to create a larger potential.
- 4. postsynaptic potential which causes depolarization; promotes action potentials.
- 6. adrenergic neurotransmitter that mediates sympathetic nervous system effects.
- 7. describes the hopping-type movement of ions down the axon and between the myelin sheaths.