EXSC 224 Final EXAM Questions and Correct
Answers
Which of the following is not a function of astrocytes?
A) control the chemical environment around neurons
B) guide the migration of young neurons, synapse formation, and helping to determine
capillary permeability
C) provide the defense for the CNS
D) support and brace neurons
E) anchor neurons to blood vessels
C
Which of the choices below describes the ANS?
A) motor fibers that conduct nerve impulses from the CNS to smooth muscle, cardiac
muscle,
and glands
B) motor fibers that conduct nerve impulses from the CNS to skeletal muscles
C) sensory and motor neurons that supply the digestive tract
D) sensory neurons that convey information from somatic receptors in the head, body wall,
and
limbs and from receptors from the special senses of vision, hearing, taste, and smell to the
CNS
A
,What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid
called?
A) astrocytes
B) Schwann cells
C) ependymal cells
D) oligodendrocytes
C
The sheath of Schwann is also called the ________.
A) white matter
B) myelin sheath
C) neurilemma
D) axolemma
C
Bipolar neurons are commonly ________.
A) called neuroglial cells
B) motor neurons
C) found in ganglia
D) found in the retina of the eye
D
Which of the following is an excitatory neurotransmitter secreted by motor neurons
innervating
skeletal muscle?
,A) cholinesterase
B) acetylcholine
C) gamma aminobutyric acid
D) norepinephrine
B
Which of the following describes the nervous system integrative function?
A) analyzes sensory information, stores information, makes decisions
B) responds to stimuli by gland secretion or muscle contraction
C) senses changes in the environment
A
The period after an initial stimulus when a neuron is not sensitive to another stimulus is the
________.
A) depolarization
B) absolute refractory period
C) repolarization
D) resting period
B
Which of the following is not a special characteristic of neurons?
A) They are mitotic.
B) They have an exceptionally high metabolic rate.
C) They have extreme longevity.
D) They conduct impulses.
, A
The part of a neuron that conducts impulses away from its cell body is called a(n)
________.
A) axon
B) Schwann cell
C) dendrite
D) neurolemma
A
Which ion channel opens in response to a change in membrane potential and participates
in the
generation and conduction of action potentials?
A) voltage-gated channel
B) mechanically gated channel
C) ligand-gated channel
D) leakage channel
A
An impulse from one nerve cell is communicated to another nerve cell via the ________.
A) effector
B) synapse
C) cell body
D) receptor
B
Answers
Which of the following is not a function of astrocytes?
A) control the chemical environment around neurons
B) guide the migration of young neurons, synapse formation, and helping to determine
capillary permeability
C) provide the defense for the CNS
D) support and brace neurons
E) anchor neurons to blood vessels
C
Which of the choices below describes the ANS?
A) motor fibers that conduct nerve impulses from the CNS to smooth muscle, cardiac
muscle,
and glands
B) motor fibers that conduct nerve impulses from the CNS to skeletal muscles
C) sensory and motor neurons that supply the digestive tract
D) sensory neurons that convey information from somatic receptors in the head, body wall,
and
limbs and from receptors from the special senses of vision, hearing, taste, and smell to the
CNS
A
,What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid
called?
A) astrocytes
B) Schwann cells
C) ependymal cells
D) oligodendrocytes
C
The sheath of Schwann is also called the ________.
A) white matter
B) myelin sheath
C) neurilemma
D) axolemma
C
Bipolar neurons are commonly ________.
A) called neuroglial cells
B) motor neurons
C) found in ganglia
D) found in the retina of the eye
D
Which of the following is an excitatory neurotransmitter secreted by motor neurons
innervating
skeletal muscle?
,A) cholinesterase
B) acetylcholine
C) gamma aminobutyric acid
D) norepinephrine
B
Which of the following describes the nervous system integrative function?
A) analyzes sensory information, stores information, makes decisions
B) responds to stimuli by gland secretion or muscle contraction
C) senses changes in the environment
A
The period after an initial stimulus when a neuron is not sensitive to another stimulus is the
________.
A) depolarization
B) absolute refractory period
C) repolarization
D) resting period
B
Which of the following is not a special characteristic of neurons?
A) They are mitotic.
B) They have an exceptionally high metabolic rate.
C) They have extreme longevity.
D) They conduct impulses.
, A
The part of a neuron that conducts impulses away from its cell body is called a(n)
________.
A) axon
B) Schwann cell
C) dendrite
D) neurolemma
A
Which ion channel opens in response to a change in membrane potential and participates
in the
generation and conduction of action potentials?
A) voltage-gated channel
B) mechanically gated channel
C) ligand-gated channel
D) leakage channel
A
An impulse from one nerve cell is communicated to another nerve cell via the ________.
A) effector
B) synapse
C) cell body
D) receptor
B
