Question :
21.
Regarding action potentials, which of the following statements TRUE?
A.
As the : 1233610
21.
Regarding action potentials, which of the following statements is TRUE?
A.
As the impulse travels along the axon, the movement of ions causes a change in charge from positive to neutral in successive sections of the axon.
B.
The action potential moves from one end of the axon to the other like a flame moving along a fuse.
C.
After the impulse has passed through a particular section of the axon, negative ions are pumped out of that section, and its charge returns to positive while the action potential continues to move along the axon.
D.
Just after an action potential has passed through a section of the axon, a neuron can fire again immediately if it receives appropriate stimulation.
22.
As an action potential occurs, the neuron’s electrical charge:
A.
changes from negative to neutral.
B.
changes from positive to neutral.
C.
changes from negative to positive.
D.
changes from positive to negative.
23.
_____ are specialized neurons that fire not only when a person enacts a particular behavior, but also when a person simply observes another individual carrying out the same behavior.
A.
Pharyngeal motor neuron
B.
Mirror neurons
C.
Ventral cord motor neuron
D.
Amphid neurons
24.
Regarding mirror neurons, which of the following statements is ACCURATE?
A.
Mirror neurons are involved in face recognition and language acquisition, but not in empathy.
B.
Mirror neurons are involved in empathy and face recognition, but not in language acquisition.
C.
Mirror neurons are involved in empathy, language acquisition, and face recognition.
D.
Mirror neurons are involved in empathy and language acquisition, but not in face recognition.
25.
A synapse is a:
A.
chemical.
B.
signal.
C.
joint.
D.
gap.
26.
_____ is the space between two neurons where the axon of a sending neuron communicates with the dendrites of a receiving neuron by using chemical messages.
A.
Synapse
B.
Terminal button
C.
Axon
D.
Cell body
27.
Which of the following statements regarding inhibitory messages is TRUE?
A.
Inhibitory messages always increase the likelihood that a receiving neuron will fire.
B.
Inhibitory messages decrease the likelihood that a receiving neuron will fire.
C.
The dendrites of a neuron cannot receive both excitatory and inhibitory messages simultaneously.
D.
Inhibitory messages make it more likely that an action potential will travel down its axon.
28.
The reabsorption of neurotransmitters by a terminal button is termed as:
A.
recycling.
B.
reassertion.
C.
reuptake.
D.
reuse.
29.
Which neurotransmitter is described INCORRECTLY?
A.
Acetylcholine—transmits messages related to skeletal muscles
B.
GABA—an excitatory neurotransmitter inhibited by alcohol or tranquilizers
C.
Serotonin—helps regulate sleep and mood
D.
Glutamate—plays a role in memory
30.
The neurotransmitter dopamine is involved in:
A.
the brain’s effort to deal with pain.
B.
Alzheimer’s disease.
C.
the regulation of sleep, eating, mood, and pain.
D.
movement, attention, and learning.
