Nerve Physiology #3: Synaptic Transmission

Neurotransmitters are released from the

• Dendrites

• Post-synaptic neuron

• Presynaptic neuron

• Axon terminal

Identify structure "W"

• Axon Terminal Bulb
• Presynapatic Bulb
• Vessicle
• Postsynaptic Bulb

Identify structure "x"

• Axon Terminal Bulb
• Neurotransmitters
• Dendrite
• Synapse

Identify structure "Z"

• Dendrite
• Axon Terminal
• Neurotransmitters
• Synapse

What generates a nerve impulse on the post-synaptic membrane (dendrite)?

• Calcium binding with a receptor site

• Potassium leaking into the post-synaptic membrane

• Neurotransmitter binding with receptor sites on protein channel

• Neurotransmitter being removed from the synapse

A chemical that axons secrete to transmit the message to another neuron.

• Neurotransmitter
• Calcium
• Sodium
• Potassium

Calcium channels on the axon terminal are _______ gated.

• Voltage 
• Chemically
• Mechancially

Sodium channels on the dendrites are _______ gated.

• Voltage 
• Chemically
• Mechancially

The influx of which ion at the axon terminal causes exocytosis of neurotransmitters into the cleft.

• Sodium
• Calcium
• Potassium

a junction at which a neuron meets another cell

• axon
• dendrites
• myelin sheath
• synapse