Unit 4 - Peripheral Neurology Exam

The process by which neighbouring neurons communicate with each other

• Neurotransmitters

• Synaptic transmission

• Endocrine system

• Nervous system

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Synaptic Transmission

Identify the structure labelled B.

• neurotransmitter

• synapse

• vesicle

• myelin

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Synaptic Transmission

Identify the structure labelled C

• dendrite

• neurotransmitter

• receptor

• schwann cell

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Synaptic Transmission

Neurotransmitter molecules diffuse across the synapse before binding to ...... on the post synaptic cell

• receptors

• schwann cells

• the nodes of Ranvier

• the axon hillock

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Synaptic Transmission

When an action potential reaches the terminal button it causes...

• vesicles to migrate towards and fuse with the cell membrane

• neurotransmitter molecules to bind to the receptor sites on the postsynaptic cell

• enzymes to breakdown leftover molecules of neurotransmitter in the synaptic cleft

• chloride ions to flood into the postsynaptic cell

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Synaptic Transmission

The tiny gaps between neighbouring neurons is called the...

• synaptic cleft

• vesicle

• transporter molecule

• terminal button

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Synaptic Transmission

Sometimes neurotransmitters make the postsynaptic cell more likely to fire, this is called an ........ effect.

• excitatory

• inhibitory

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Synaptic Transmission

Serotonin is a neurotransmitter that helps regulate:

• learning and memory
• pain and pleasure
• muscle movements
• sleep, moods/emotions

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Synaptic Transmission

Which neurotransmitter is released in response to stress and trauma?

• Acetylcholine
• Endorphins
• Serotonin
• GABA

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Synaptic Transmission

Based on our knowledge of how synaptic transmission works, why are illicit drugs addictive?

• After prolonged use, you begin to need more and more dopamine to feel the same level of happiness

• After prolonged use, your receptors adapt to convince you to want to feel that "good" again.

• After prolonged, you start to lose receptors

• All other choices are correct.

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Synaptic Transmission