GMS 6474 Problem Sets questions with verified ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
detailed solutions ||\\//||
During contraction muscle fibers fatigue at different rates. Type 1 fibers fatigue ______ due
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
to their ______ oxidative capacity.
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last, low ||\\//||
last, high ||\\//||
first, low ||\\//||
first, high - correct answer✔✔last, high
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
The motor neuron releases this neurotransmitter into the post-synaptic cleft of the
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
neuromuscular junction to invoke an end-plate potential. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Acetylcholine
Potassium
Nicotine
Calcium - correct answer✔✔Acetylcholine ||\\//|| ||\\//|| ||\\//||
What is the role of Titan within muscle? ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
It allows for the rapid depolarization of the muscle cell
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It slows the electrical conduction through muscle cells
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
,It tethers myosin filaments to the Z-line
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It binds collagen. filaments to the M line
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It sequesters Ca++ within the muscle cell - correct answer✔✔It tethers myosin filaments to
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
the Z-line
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In skeletal muscle, when there is maximal load, the velocity of contraction equals 0. This is
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
considered what type of contraction? ||\\//|| ||\\//|| ||\\//|| ||\\//||
Isotonic
Isometric
Lengthening
Shortening - correct answer✔✔Isometric ||\\//|| ||\\//|| ||\\//||
Duchenne Muscular Dystrophy (DMD) is characterized by the complete loss of which of ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
the following muscle proteins? ||\\//|| ||\\//|| ||\\//||
Dystrophin
Actin
Myosin
Nebulin
Serca - correct answer✔✔Dystrophin ||\\//|| ||\\//|| ||\\//||
With respect to muscle physiology, after binding, the myosin pulls on actin towards the M
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
line and supersedes it. This causes the release of Pi as filaments are pulled together and
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
, move towards the H zone, which results in contraction of the muscle. Which of the
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
following best describes this step of contraction? ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Dissociation
Activation
Termination
Power Stoke ||\\//||
Binding - correct answer✔✔Power Stoke ||\\//|| ||\\//|| ||\\//|| ||\\//||
Cardiac muscle acts as a syncytium due to the presence of ________ and _________ found
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
in Intercalated Disks
||\\//|| ||\\//||
Desmosomes, gap junctions ||\\//|| ||\\//||
mitochondria, dyad ||\\//||
sarcomeres, dyad ||\\//||
t-tubules, sarcoplasmic reticulum - correct answer✔✔Desmosomes, gap junctions ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What do smooth muscle fibers lack?
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Tropmyosin
Troponins
Actin Filaments ||\\//||
Myosin Filaments - correct answer✔✔Troponins ||\\//|| ||\\//|| ||\\//|| ||\\//||
Calcium is released and sequestered differently in Skeletal and Cardiac muscles. What is
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
one physiological relevance of cardiac muscle calcium handling?
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
detailed solutions ||\\//||
During contraction muscle fibers fatigue at different rates. Type 1 fibers fatigue ______ due
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
to their ______ oxidative capacity.
||\\//|| ||\\//|| ||\\//|| ||\\//||
last, low ||\\//||
last, high ||\\//||
first, low ||\\//||
first, high - correct answer✔✔last, high
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
The motor neuron releases this neurotransmitter into the post-synaptic cleft of the
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
neuromuscular junction to invoke an end-plate potential. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Acetylcholine
Potassium
Nicotine
Calcium - correct answer✔✔Acetylcholine ||\\//|| ||\\//|| ||\\//||
What is the role of Titan within muscle? ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
It allows for the rapid depolarization of the muscle cell
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
It slows the electrical conduction through muscle cells
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
,It tethers myosin filaments to the Z-line
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
It binds collagen. filaments to the M line
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
It sequesters Ca++ within the muscle cell - correct answer✔✔It tethers myosin filaments to
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
the Z-line
||\\//|| ||\\//||
In skeletal muscle, when there is maximal load, the velocity of contraction equals 0. This is
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
considered what type of contraction? ||\\//|| ||\\//|| ||\\//|| ||\\//||
Isotonic
Isometric
Lengthening
Shortening - correct answer✔✔Isometric ||\\//|| ||\\//|| ||\\//||
Duchenne Muscular Dystrophy (DMD) is characterized by the complete loss of which of ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
the following muscle proteins? ||\\//|| ||\\//|| ||\\//||
Dystrophin
Actin
Myosin
Nebulin
Serca - correct answer✔✔Dystrophin ||\\//|| ||\\//|| ||\\//||
With respect to muscle physiology, after binding, the myosin pulls on actin towards the M
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
line and supersedes it. This causes the release of Pi as filaments are pulled together and
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
, move towards the H zone, which results in contraction of the muscle. Which of the
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
following best describes this step of contraction? ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Dissociation
Activation
Termination
Power Stoke ||\\//||
Binding - correct answer✔✔Power Stoke ||\\//|| ||\\//|| ||\\//|| ||\\//||
Cardiac muscle acts as a syncytium due to the presence of ________ and _________ found
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
in Intercalated Disks
||\\//|| ||\\//||
Desmosomes, gap junctions ||\\//|| ||\\//||
mitochondria, dyad ||\\//||
sarcomeres, dyad ||\\//||
t-tubules, sarcoplasmic reticulum - correct answer✔✔Desmosomes, gap junctions ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What do smooth muscle fibers lack?
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Tropmyosin
Troponins
Actin Filaments ||\\//||
Myosin Filaments - correct answer✔✔Troponins ||\\//|| ||\\//|| ||\\//|| ||\\//||
Calcium is released and sequestered differently in Skeletal and Cardiac muscles. What is
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
one physiological relevance of cardiac muscle calcium handling?
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
