Neurotransmitters Flashcards
What are neurotransmitters?
Chemical messengers that transmit signals across a synapse from one neuron to another.
True or False: Neurotransmitters can only have excitatory effects.
False
Fill in the blank: The primary neurotransmitter involved in muscle contraction is ______.
Acetylcholine
Which neurotransmitter is primarily associated with mood regulation?
Serotonin
What is the role of dopamine in the brain?
Dopamine is involved in reward, motivation, and motor control.
True or False: GABA is an inhibitory neurotransmitter.
True
What neurotransmitter is associated with the ‘fight or flight’ response?
Norepinephrine
Multiple Choice: Which neurotransmitter is primarily involved in learning and memory?
Glutamate
What is the function of endorphins?
Endorphins act as natural painkillers and are involved in pleasure.
Fill in the blank: The neurotransmitter that plays a key role in the sleep-wake cycle is ______.
Serotonin
True or False: Neurotransmitters can be both excitatory and inhibitory.
True
What is the effect of excess glutamate in the brain?
It can lead to excitotoxicity and neuronal damage.
Which neurotransmitter is released during pleasurable activities?
Dopamine
Multiple Choice: Which of the following is NOT a neurotransmitter? A) Serotonin B) Acetylcholine C) Hormone D) Dopamine
C) Hormone
What is the primary function of serotonin?
To regulate mood, appetite, and sleep.
Fill in the blank: The neurotransmitter involved in pain perception is ______.
Substance P
True or False: Neurotransmitter receptors are specific to certain neurotransmitters.
True
What neurotransmitter is most commonly associated with addiction?
Dopamine
What is the primary role of norepinephrine in the body?
To regulate arousal and alertness.
Fill in the blank: The neurotransmitter that inhibits excessive neuronal firing is ______.
GABA
What is the difference between a neurotransmitter and a hormone?
Neurotransmitters act locally across synapses, while hormones travel through the bloodstream.
Multiple Choice: Which neurotransmitter is known as the ‘feel-good’ neurotransmitter? A) Norepinephrine B) Dopamine C) GABA D) Serotonin
B) Dopamine
True or False: All neurotransmitters are produced in the brain.
False
What role does acetylcholine play in the nervous system?
It is involved in transmitting signals to muscles and is important for learning and memory.
Fill in the blank: The neurotransmitter responsible for regulating stress responses is ______.
Cortisol
