a. transmit neural impulses.
b. support and nourish glial cells.
c. each have only one dendrite.
d. are one kind of neurotransmitter.
A synapse is the _____.
a. same as the action potential.
b. junction where neurons communicate with one another.
c. chemical that travels from one neuron to another.
d. signal that travels from one neuron to another.
Messages from other neurons and sensory receptors____________. Select one:
a. are collected by the synaptic vesicles.
b. are relayed by glial cells to the correct node of Ranvier. c. are received by the dendrites.
d. can close the synaptic gap.
The resting potential is_____________.
a. the length of time that a neuron is incapable of activating after an action potential. b. the term used to describe how the sympathetic nervous system reduces c. when a neuron is not firing.
d. more prevalent in left-handed people who display right-hemisphere language abilities. Question 5
During the action potential_____________.
a. the electrical charge of the neuron changes from positive to negative. b. sodium ions rush into the interior of the axon.
c. the language activity of the right hemisphere is suppressed. d. L-dopa is continuously released by the postsynaptic neuron. Question 6
Reuptake occurs when____________.
a. the brain shifts functions from damaged areas to undamaged areas. b. hormones continuously affect the target organ.
c. brain molecules are bombarded by magnetic waves.
d. neurotransmitter molecules are reabsorbed by the presynaptic neuron. Question 7
A neurotransmitter is _____.
a. a machine that measures brain waves.
b. chemical that influences the firing of neurons.
c. a drug that produces hallucinations.
d. an ionized chemical bound to the nucleus of a cell.
The _____ is the most primitive part of the human brain and includes structures that are responsible for regulating heartbeat and respiration, screening sensory information, and regulating sleep and wake cycles. Select one:
Which of the following is the brain structure that is responsible for coordinating our body movements? Select one:
Which of the following brain structures is involved in the control of body temperature, hunger, and thirst? Select one:
An electroencephalogram (EEG) records the _____ of the brain. Select one:
a. structural properties
b. chemical activity
c. brain wave activity
d. metabolic activity
Which of the following techniques produces an image of the brain's activity by tracking the brain's use of glucose or oxygen? Select one:
a. positron emission tomography
c. magnetic resonance imaging
The two main subdivisions of the autonomic nervous system are the________________. Select one:
a. left and right hemisphere.
b. somatic nervous system and autonomic nervous system.
c. brain and the spinal cord.
d. sympathetic nervous system and parasympathetic nervous system. Question 14
The _____ lobe is involved in a person's ability to plan, initiate, and carry out voluntary movements and actions. Select one:
When Mark was three years old he had a traumatic head injury. After two years, he made a full recovery with no apparent...
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