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BIO
BIO 252 FINAL EXAM QUESTIONS WITH
VERIFIED ANSWERS, ALREADY PASSED!
(COMPLETE & ACCURATE)
1. The neuron cannot respond to a second stimulus, no matter
how strong: absolute refractory period
2. The specific period during which potassium ions diffuse out
of the neuron due to a change in membrane permeability:
repolarization
3. Also called a nerve impulse transmitted by axons: action
potential
4. The interior of the cell becomes less negative due to an influx
of sodium ions.: depolarization
5. Voltage-gated na+ channels open: depolarization
6. Na+ channels are inactivating, and voltage-gated k+ channels
open.: repolarization
BIO 252
,7. Some k+ channels remain open and na+ channels reset:
hyperpolarization 8. Any stimulus at or above this level will
result in action potential.: threshold stimulus
9. Auditory area: temporal lobe
10. Primary somatosensory cortex: parietal lobe
11. Primary (somatic) motor cortex: frontal lobe
12. Nerve impulses are sent to slow the heart's rate of
contraction. The nerve fibers sending these signals will
most likely belong to which division of the nervous system?:
parasympathetic division
13. Nerve impulses leading to the brain carry information
about cool temperatures on the skin. The nerve fibers
sending these signals will most likely belong to which
division of the nervous system?: sensory (afferent) divisions
14. Nerve impulses leading to the skeletal muscle carry
information to direct movement. The nerve fibers sending
, these signals will most likely belong to which division of the
nervous system?: somatic nervous system
15. Cranial nerves ii the optic nerve sends nerve impulses to
the brain carrying information about things we see. These
nerve fibers most likely belong to which division of the nervous
system?: sensory(afferent) division
16. The concentration of ions in the chemical environment
surrounding the neurons must be tightly regulated for neurons
to function properly. Which of the following cells is most
responsible for this?: astrocytes
17. Some nerve fibers of the peripheral nervous system have
the ability to regenerate after damage has occurred. Which of
the following cells is most responsible for aiding in this
regulation?: Schwann cells
18. Meningitis can be caused by infection of the central
nervous system by bacteria. Which cells would be most
responsible for removing the infection?: microglia
BIO
BIO 252 FINAL EXAM QUESTIONS WITH
VERIFIED ANSWERS, ALREADY PASSED!
(COMPLETE & ACCURATE)
1. The neuron cannot respond to a second stimulus, no matter
how strong: absolute refractory period
2. The specific period during which potassium ions diffuse out
of the neuron due to a change in membrane permeability:
repolarization
3. Also called a nerve impulse transmitted by axons: action
potential
4. The interior of the cell becomes less negative due to an influx
of sodium ions.: depolarization
5. Voltage-gated na+ channels open: depolarization
6. Na+ channels are inactivating, and voltage-gated k+ channels
open.: repolarization
BIO 252
,7. Some k+ channels remain open and na+ channels reset:
hyperpolarization 8. Any stimulus at or above this level will
result in action potential.: threshold stimulus
9. Auditory area: temporal lobe
10. Primary somatosensory cortex: parietal lobe
11. Primary (somatic) motor cortex: frontal lobe
12. Nerve impulses are sent to slow the heart's rate of
contraction. The nerve fibers sending these signals will
most likely belong to which division of the nervous system?:
parasympathetic division
13. Nerve impulses leading to the brain carry information
about cool temperatures on the skin. The nerve fibers
sending these signals will most likely belong to which
division of the nervous system?: sensory (afferent) divisions
14. Nerve impulses leading to the skeletal muscle carry
information to direct movement. The nerve fibers sending
, these signals will most likely belong to which division of the
nervous system?: somatic nervous system
15. Cranial nerves ii the optic nerve sends nerve impulses to
the brain carrying information about things we see. These
nerve fibers most likely belong to which division of the nervous
system?: sensory(afferent) division
16. The concentration of ions in the chemical environment
surrounding the neurons must be tightly regulated for neurons
to function properly. Which of the following cells is most
responsible for this?: astrocytes
17. Some nerve fibers of the peripheral nervous system have
the ability to regenerate after damage has occurred. Which of
the following cells is most responsible for aiding in this
regulation?: Schwann cells
18. Meningitis can be caused by infection of the central
nervous system by bacteria. Which cells would be most
responsible for removing the infection?: microglia
