EXSS 380 QUIZ 1,2,3 & 4 QUESTIONS AND ANSWERS
The ____ area of the cerebral cortex is responsible for integration and interpretation of
information from peripheral receptors - Answers :somatosensory association
The precentral gyrus is composed of the _____, while the post central gyrus is
composed of the _____ - Answers :primary motor area; somatosensory area
The area of the somatosensory cortex representing the fingers is relatively ______, that
of the toes is relatively ______ - Answers :large, small
The majority of neural tracts are transferred to the opposite of the CND (decussation)
near the ____ - Answers :medulla oblongata
The cerebellum has outputs to all of the following except ______ - Answers :alpha
motor neurons
Neurons which transmit information toward the central nervous system are _____ -
Answers :afferent
The neurotransmitter associated with skeletal muscle depolarized is ______ - Answers
:Acetylcholine
What is motor control? - Answers :The study of hoe the neuromuscular system initiates
and coordinates muscle activity to produce movement
Input to the soma is achieved via the ____, while output is achieved via the _____ -
Answers :Dendrite ; axon
When at rest, the intercellular space (inside the membrane) is ____ charged relative to
the extracellular space (outside the membrane) - Answers :negatively
In general, a change in selective membrane permeability to _____ begins the chain
reaction that results in membrane depolarization - Answers :NA+
The motor unites associated with the muscles that control eye movements have a
_____ innervation ratio, and those of the quadriceps have a ____ innervation ratio -
Answers :low;high
Which type of muscle fiber is activated initially during muscle contraction? - Answers
:Type 1
All of the following are phases of the action potential generation process except: -
Answers :hypopolarization
,A homunculus best refers to which of the following? - Answers :Somatotopic
organization of somatosensory and motor cortical areas =
The neurotransmitter associated with skeletal muscle depolarization is ____.
A. Dopamine
B. Serotonin
C. Acetylcholine
D. GABA - Answers :C. Acetylcholine
Depletion of ___ is associated with Parkinson's disease.
A. GABA
B. Dopamine
C. Acetylcholine
D. Serotonin - Answers :B. Dopamine
Input to the neuron is achieved via the ___, while output is achieved via the ___.
A. dendrite; axon
B. synaptic end bulb; motor end plate
C. axon; dendrite
D. axon hillock; synaptic. vesicle - Answers :A. dendrite; axon
A cluster of neurons in the peripheral nervous system refers to a ____.
A. Nerve
B. Tract
C. Nucleus
D. Ganglion - Answers :D. Ganglion
When at rest, the intracellular space of a neuron is ___ charged relative to the
extracellular space.
A. Positively
B. Neutrally
C. Negatively - Answers :C. Negatively
A change in selective membrane permeability to ___ begins the chain reaction that
results in excitation of the post-synaptic neuron.
A. Na+
B. A-
C. Cl-
D. K+ - Answers :A. Na+
The interval during the action potential when a neuron cannot be depolarized regardless
of the strength of stimulation refers to ___.
A. the relative refractory period
B. the absolute refractory period
C. the overshoot period
D. the afterhyperpolarization period - Answers :B. the absolute refractory period
, The motor units associated with the muscles that control the fingers have a ___
innervation ratio, while those of the quadriceps have a ___ innervation ratio.
A. high; low
B. low; low
C. high; high
D. low; high - Answers :D. low; high
Which type of muscle fiber is activated first during muscle contraction?
A. type I
B. Type IIb
C. Type Ia
D. Type IIa - Answers :A. Type I
The ___ is responsible for increased nerve conduction velocity.
A. axon
B. Myelin sheath
C. Dendrite
D. Gray matter - Answers :B. Myelin sheath
Motor control - Answers :how the neuromuscular system initiates and coordinates
muscle activity
to produce movement
Motor learning - Answers :acquisition of motor skills
Motor skill - Answers :activity that requires voluntary movement
Functions of the nervous system: - Answers :- Motor (muscular contraction and gland
secretions)
- Sensory (sense changes internally and externally)
- Integrative (analyze, store, and decides on data)
PNS: - Answers :Cranial and spinal nerves
Electricity - Answers :communication in the nervous system
Afferent (sensory) neuron - Answers :transmits sensory information from the PNS to the
CNS
For example: signal from the extremities to the CNS
Efferent (motor) neuron - Answers :transmits commands from CNS to the muscle
Interneurons - Answers :association neurons or communication links
Nerve - Answers :bundle of nerve fibers in the PNS
The ____ area of the cerebral cortex is responsible for integration and interpretation of
information from peripheral receptors - Answers :somatosensory association
The precentral gyrus is composed of the _____, while the post central gyrus is
composed of the _____ - Answers :primary motor area; somatosensory area
The area of the somatosensory cortex representing the fingers is relatively ______, that
of the toes is relatively ______ - Answers :large, small
The majority of neural tracts are transferred to the opposite of the CND (decussation)
near the ____ - Answers :medulla oblongata
The cerebellum has outputs to all of the following except ______ - Answers :alpha
motor neurons
Neurons which transmit information toward the central nervous system are _____ -
Answers :afferent
The neurotransmitter associated with skeletal muscle depolarized is ______ - Answers
:Acetylcholine
What is motor control? - Answers :The study of hoe the neuromuscular system initiates
and coordinates muscle activity to produce movement
Input to the soma is achieved via the ____, while output is achieved via the _____ -
Answers :Dendrite ; axon
When at rest, the intercellular space (inside the membrane) is ____ charged relative to
the extracellular space (outside the membrane) - Answers :negatively
In general, a change in selective membrane permeability to _____ begins the chain
reaction that results in membrane depolarization - Answers :NA+
The motor unites associated with the muscles that control eye movements have a
_____ innervation ratio, and those of the quadriceps have a ____ innervation ratio -
Answers :low;high
Which type of muscle fiber is activated initially during muscle contraction? - Answers
:Type 1
All of the following are phases of the action potential generation process except: -
Answers :hypopolarization
,A homunculus best refers to which of the following? - Answers :Somatotopic
organization of somatosensory and motor cortical areas =
The neurotransmitter associated with skeletal muscle depolarization is ____.
A. Dopamine
B. Serotonin
C. Acetylcholine
D. GABA - Answers :C. Acetylcholine
Depletion of ___ is associated with Parkinson's disease.
A. GABA
B. Dopamine
C. Acetylcholine
D. Serotonin - Answers :B. Dopamine
Input to the neuron is achieved via the ___, while output is achieved via the ___.
A. dendrite; axon
B. synaptic end bulb; motor end plate
C. axon; dendrite
D. axon hillock; synaptic. vesicle - Answers :A. dendrite; axon
A cluster of neurons in the peripheral nervous system refers to a ____.
A. Nerve
B. Tract
C. Nucleus
D. Ganglion - Answers :D. Ganglion
When at rest, the intracellular space of a neuron is ___ charged relative to the
extracellular space.
A. Positively
B. Neutrally
C. Negatively - Answers :C. Negatively
A change in selective membrane permeability to ___ begins the chain reaction that
results in excitation of the post-synaptic neuron.
A. Na+
B. A-
C. Cl-
D. K+ - Answers :A. Na+
The interval during the action potential when a neuron cannot be depolarized regardless
of the strength of stimulation refers to ___.
A. the relative refractory period
B. the absolute refractory period
C. the overshoot period
D. the afterhyperpolarization period - Answers :B. the absolute refractory period
, The motor units associated with the muscles that control the fingers have a ___
innervation ratio, while those of the quadriceps have a ___ innervation ratio.
A. high; low
B. low; low
C. high; high
D. low; high - Answers :D. low; high
Which type of muscle fiber is activated first during muscle contraction?
A. type I
B. Type IIb
C. Type Ia
D. Type IIa - Answers :A. Type I
The ___ is responsible for increased nerve conduction velocity.
A. axon
B. Myelin sheath
C. Dendrite
D. Gray matter - Answers :B. Myelin sheath
Motor control - Answers :how the neuromuscular system initiates and coordinates
muscle activity
to produce movement
Motor learning - Answers :acquisition of motor skills
Motor skill - Answers :activity that requires voluntary movement
Functions of the nervous system: - Answers :- Motor (muscular contraction and gland
secretions)
- Sensory (sense changes internally and externally)
- Integrative (analyze, store, and decides on data)
PNS: - Answers :Cranial and spinal nerves
Electricity - Answers :communication in the nervous system
Afferent (sensory) neuron - Answers :transmits sensory information from the PNS to the
CNS
For example: signal from the extremities to the CNS
Efferent (motor) neuron - Answers :transmits commands from CNS to the muscle
Interneurons - Answers :association neurons or communication links
Nerve - Answers :bundle of nerve fibers in the PNS
