AP 5-4.2, 5-5: Synapse Transmission & Neurotransmitters

A(n) ​ (a)   is a chemical messenger in the nervous system.

• neurotransmitter
• hormone
• enzyme
• neuron
• action potential
• soma

The part of the neuron that receives messages from other neurons is called a(n): (a)  

• axon

• dendrite
• cell body

• Schwann cell

• axon terminal

Neurotransmitters are located in the (a)   .

• synaptic end bulbs
• dendrites

• Schwann cells

• cell body

• myelin sheath
• nucleus

Reorder the following steps to represent the first part of synapse communication:

• Neurotransmitters bind to receptors on dendrite.

• An action potential arrives at presynaptic membrane.

• Voltage-gated calcium channels enter cell, fusing to vesicles.

• Neurotransmitters released into synaptic cleft.

• Vesicle with neurotransmitters fuses with presynaptic membrane.

Synapse communication is ___; it involves the transmission of the action potential and the stimulation of the postsynaptic neuron by neurotransmitters.

• electrochemical

• mechanochemical

• propriochemical

• chemiosmotic

• selectively diffusive

What generates a nerve impulse on the postsynaptic neuron?

• calcium leaking into the postsynaptic membrane

• reuptake of neurotransmitter from synapse

• potassium leaking into the postsynaptic membrane

• calcium binding with a receptor site

• neurotransmitter binding with receptor site

Reorder the structures to demonstrate the correct pathway of nerve impulse (from start of neuron to end):

• Synaptic End Bulbs

• Axon Hillock

• Axon

• Dendrite

• Soma

The essential ion in the process of synapse communication is:

• sodium

• calcium

• potassium

• iodine

• oxygen

Communication of information between neurons is accomplished by movement of chemicals across a small gap called the

• AXON TERMINAL

• NEURONAL CLEFT

• SYNAPSE

• VESICLE JUNCTION

• ACTION POTENTIAL

What is W?

• Axon Terminal

• Neurotransmitters

• Dendrite

• Synapse