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Question

The Nervous System

1. What channels in the presynaptic neuron open up in response to an action

potential? __ Calcium channels or Sodium channels_____

2. The presence of what ion inside the cell causes the synaptic vesicles to

fuse with the membrane? ___Ca2+_____

3. a. What is the name for the chemicals stored in the synaptic vesicles?

_Neurotransmitters___________

b. What do these chemicals diffuse across? ____Synaptic cleft______

c. Where do these chemicals bind to receptors? ___Postsynaptic neuro___________________

4. What type of gated channels do these chemicals open? ___ Voltage-gated Ca2+ Channels _____________

5. Autonomic nerves innervate what three things?

a. Cardiac muscle

b. Smooth muscle

c. Glands

Answer 1

1. Ca2+ voltge gated channels

2.correct

3.a.correct

3.b.correct

3.c.correct

4.Na+ ligand gated channels

5.correct