PSIO 305 EXAM 1 QUESTIONS AND ANSWERS
In the presentation of a case study I showed that changes in the brain leading to
cognitive improvement due to an animal being in a rich stimulating environment or due
to daily exercise routines might be due to which one of the following? - Answers
:Increases in brain derived neurotrophic factor
Which of the following were given as models of "disuse" in our opening lecture of the
presentation of a case study? (SELECT ALL THAT APPLY) - Answers :Being a couch
potato
A limb being in a cast due to a fracture
Microgravity environment of space light
Excessive screen time
In the presentation of a case study, I discussed a study that compared swimmers,
runners, cyclists, and triathletes compared to control subjects and showed that what
variable was statistically improved in the group of runners compared with any of the
other groups? - Answers :Increased bone mineral density in the bones of the leg
There are approximately 10 times more neurons in the nervous system compared with
neuroglia cells. - Answers :False
The motor unit types (S, FR, and FF) that were initially identified in the cat medial
gastrocnemius muscle were based on all of the following EXCEPT: - Answers :The
mitochondrial density of the muscle fibers innervated by a single motor neuron
Trophic interactions between cells and tissues can promote all of the following
EXCEPT:
cell survival
increased heart rate
increased cell proliferation
increased cellular differentiation - Answers :increased heart rate
A homunculus represents the somatotopic organization of the primary sensory cortex
and shows the relative sensitivity of each area of the body. - Answers :True
The primary motor cortex is part of which lobe(s) of the brain? - Answers :Frontal
In sensory perception, action potential frequency is inversely proportional to stimulus
intensity. - Answers :False
A motor unit is the smallest voluntary functional unit of force production and consists of
one motor neuron and all the muscle fibers that it innervates. - Answers :True
Compared to the 'classic' ionotropic synapse, the effects at a synapse mediated through
GPCR (G-protein coupled receptors) are:(check all that apply)
, Question 6 options:
slower
longer-lasting
faster
result primarily from ion flux and voltage change - Answers :slower
longer-lasting
All of the following structure: function pairs is correct for the neuron EXCEPT?
Question 7 options:Post-synaptic ligand-gated channels: ion flux and post-synaptic local
voltage changesDendrite and soma: receptive area for incoming signalsAxon: conducts
action potentials to other cells
Synapse: typically enables an electrical signal to be transmitted directly to a subsequent
neuron - Answers :Synapse: typically enables an electrical signal to be transmitted
directly to a subsequent neuron
Proprioception is the awareness of the location of your body parts, provided by input
from peripheral sensory receptors. - Answers :True
Synapses are involved with converting electrical and chemical signals. - Answers :True
The distribution of force by the activation of a single motor axon in the experiment
involving intraneural microstimulation showed that: - Answers :Individual motor unit
force assessed by intraneural microstimulation was more focused to an individual finger
compared to the results using the technique of spike-triggered averaging of single motor
unit force across the four fingers
The extent of synchronous discharges between two motor units can be quantified using
an index known as the Common input strength index or CIS - Answers :True
Extensor digitorum is a multi-tendoned muscle that controls the fingers and could be
deemed an intrinsic muscle because the muscle itself is in the arm - Answers :False
Initial gains in strength in the first 3 weeks of a strength training program are mostly due
to increases in the size of a muscle.
Question 2 options:
True
False - Answers :False
At the conclusion of the studies on extensor digitorum, one future direction which was
suggested was to perform similar studies on the finger flexor muscles to determine if
their organization is similar to extensor digitorum.
Question 3 options:
True
False - Answers :True
The neural changes that occur with training might include all of the following EXCEPT:
In the presentation of a case study I showed that changes in the brain leading to
cognitive improvement due to an animal being in a rich stimulating environment or due
to daily exercise routines might be due to which one of the following? - Answers
:Increases in brain derived neurotrophic factor
Which of the following were given as models of "disuse" in our opening lecture of the
presentation of a case study? (SELECT ALL THAT APPLY) - Answers :Being a couch
potato
A limb being in a cast due to a fracture
Microgravity environment of space light
Excessive screen time
In the presentation of a case study, I discussed a study that compared swimmers,
runners, cyclists, and triathletes compared to control subjects and showed that what
variable was statistically improved in the group of runners compared with any of the
other groups? - Answers :Increased bone mineral density in the bones of the leg
There are approximately 10 times more neurons in the nervous system compared with
neuroglia cells. - Answers :False
The motor unit types (S, FR, and FF) that were initially identified in the cat medial
gastrocnemius muscle were based on all of the following EXCEPT: - Answers :The
mitochondrial density of the muscle fibers innervated by a single motor neuron
Trophic interactions between cells and tissues can promote all of the following
EXCEPT:
cell survival
increased heart rate
increased cell proliferation
increased cellular differentiation - Answers :increased heart rate
A homunculus represents the somatotopic organization of the primary sensory cortex
and shows the relative sensitivity of each area of the body. - Answers :True
The primary motor cortex is part of which lobe(s) of the brain? - Answers :Frontal
In sensory perception, action potential frequency is inversely proportional to stimulus
intensity. - Answers :False
A motor unit is the smallest voluntary functional unit of force production and consists of
one motor neuron and all the muscle fibers that it innervates. - Answers :True
Compared to the 'classic' ionotropic synapse, the effects at a synapse mediated through
GPCR (G-protein coupled receptors) are:(check all that apply)
, Question 6 options:
slower
longer-lasting
faster
result primarily from ion flux and voltage change - Answers :slower
longer-lasting
All of the following structure: function pairs is correct for the neuron EXCEPT?
Question 7 options:Post-synaptic ligand-gated channels: ion flux and post-synaptic local
voltage changesDendrite and soma: receptive area for incoming signalsAxon: conducts
action potentials to other cells
Synapse: typically enables an electrical signal to be transmitted directly to a subsequent
neuron - Answers :Synapse: typically enables an electrical signal to be transmitted
directly to a subsequent neuron
Proprioception is the awareness of the location of your body parts, provided by input
from peripheral sensory receptors. - Answers :True
Synapses are involved with converting electrical and chemical signals. - Answers :True
The distribution of force by the activation of a single motor axon in the experiment
involving intraneural microstimulation showed that: - Answers :Individual motor unit
force assessed by intraneural microstimulation was more focused to an individual finger
compared to the results using the technique of spike-triggered averaging of single motor
unit force across the four fingers
The extent of synchronous discharges between two motor units can be quantified using
an index known as the Common input strength index or CIS - Answers :True
Extensor digitorum is a multi-tendoned muscle that controls the fingers and could be
deemed an intrinsic muscle because the muscle itself is in the arm - Answers :False
Initial gains in strength in the first 3 weeks of a strength training program are mostly due
to increases in the size of a muscle.
Question 2 options:
True
False - Answers :False
At the conclusion of the studies on extensor digitorum, one future direction which was
suggested was to perform similar studies on the finger flexor muscles to determine if
their organization is similar to extensor digitorum.
Question 3 options:
True
False - Answers :True
The neural changes that occur with training might include all of the following EXCEPT:
