Chapter 12

1. _________ cells forms myelin sheath in PNS
3. When excitatory post synaptic potentials accumulate and raise membrane potential closer to threshold then a small stimulus can trigger action potential. We say this neuron is __________
6. Neuroglial cell that forms the blood brain barrier
8. When inhibitory post synaptic potentials accumulate and push membrane potential away from threshold so that we need a larger stimulus to trigger an action potential, we say this neuron is __________
9. Structural classification of neuron with one long axon and multiple dendrites, example= motor neurons that control skeletal muscle
11. Site of communication between a neuron and another cell
12. Change in membrane potential that once initiated affects an entire excitable membrane, does not diminish as it moves away from the source = _____ potential
13. Temporary, localized change in resting potential, caused by a stimulus which decreases as we move away from the stimulus= ______ potential
15. Type of synapse where the neurotransmitter is acetylcholine= _________ synapse
16. Division of the peripheral nervous system that brings sensory information into the CNS

1. Propagation of an action potential in a myelinated axon = __________ propagation
2. Division of the peripheral nervous system that carries motor commands to peripheral effectors
4. Neuroglial cell that lines the ventricles and central canal and helps produce CSF= ____________ cell
5. Movement of _______ into the axon terminal triggers exocytosis of acetylcholine into the synaptic cleft
7. Forms myelin sheath in CNS
10. Shift in membrane potential to a less negative potential. For example, an influx of sodium ions will produce this effect
14. At the synapse, the presynaptic neuron and postsynaptic cell are separated by a synaptic __________.