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Neurochemical Messengers

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Questions and Answers

What is the primary function of GABA in the brain?

To inhibit or prevent neurons from firing (correct)

To facilitate learning and memory

To control muscle movements

To stimulate neurons to fire

What is a characteristic of acetylcholine (ACh)?

It is involved in learning, memory, and muscle action (correct)

It is involved in anxiety disorders

It inhibits the firing of neurons

It is usually found in the peripheral nervous system

What is a consequence of low levels of GABA in the brain?

Impaired learning and memory

Anxiety disorders (correct)

Violent muscle spasms

Increased risk of Alzheimer's disease

What is the effect of the venom from a black widow spider?

It causes acetylcholine to be released excessively Signup and view all the answers

What is the primary role of glutamate in the brain?

To excite many neurons to fire Signup and view all the answers

How do antianxiety drugs work in relation to GABA?

They increase the inhibiting effects of GABA Signup and view all the answers

What is the main function of neurotransmitters in the brain?

To stimulate neurons to fire Signup and view all the answers

How do some neurotransmitters differ in their function?

Some activate neurons, while others deactivate them Signup and view all the answers

What analogy is used to describe how neurotransmitters interact with receptor sites?

Like keys in keyholes Signup and view all the answers

What effect does the venom of the black widow spider have on neurotransmission?

It disturbs neurotransmission Signup and view all the answers

How do drugs interfere with neurotransmission?

By enhancing the effects of neurotransmitters Signup and view all the answers

What is usually true about the secretion of neurotransmitters by neurons?

Most neurons only secrete one type of neurotransmitter Signup and view all the answers