University of Missouri-Kansas City Phys 399 E4L1 - Skeletal
Muscle Questions With Complete Solutions
Are the somatic motor neurons to type 1 or type 2b smaller?
Correct Answer type 1
Can smooth muscle contraction be intrinsic? Correct Answer
yes
Can you get another AP to take place before the first contractile
event is over? Correct Answer yes
Does aerobic or anaerobic respiration cause fatigue faster?
Correct Answer anaerobic
Does an isometric or isotonic contraction have a longer latent
period? Correct Answer isotonic
Does an isometric or isotonic contraction have a shorter latent
period? Correct Answer isometric
Does peripheral or central fatigue happen first? Correct Answer
central
Does skeletal or cardiac muscle have a higher optimal length?
Correct Answer skeletal
Does STO or FTG have a larger fiber diameter? Correct
Answer FTG
,Does the latent period occur before or after the shortening of a
muscle in an isotonic contraction? Correct Answer after
How is Ca2+ removed from the cytosol? Correct Answer
primary active uniporter
How is phosphocreatine used for energy? Correct Answer
phosphate group is popped off so there's a quick access to ATP
How many motor neurons innervate a single muscle fiber?
Correct Answer one
How many muscle fibers can a motor unit innervate? Correct
Answer one or multiple
How much ATP does anaerobic glycolysis make? Correct
Answer 2
How much ATP does oxidative phosphorylation produce?
Correct Answer 36-38
How much ATP is made from oxidative phosphorylation?
Correct Answer 36-38ATP
If the DHP receptors are open, are the ryanodine receptors
opened or closed? Correct Answer opened
If the DHP receptors are relaxed, are the ryanodine receptors
opened or closed? Correct Answer closed
, If the K+ levels in the ECF are increasing, what happens to the
Vm? Correct Answer it gets depolarized
If the load on a muscle is greater than the tension it can generate,
will the muscle move into an isotonic contraction? Correct
Answer no
If the muscle is lengthening, what is happening to the
crossbridge cycling? Correct Answer ZOO will go away and
the crossbridges won't have anything to grab onto
If the muscle is shortening, what is happening to the crossbridge
cyling? Correct Answer actin interference
In regards to the ATP in a muscle cell, how many muscle
twitches can occur? Correct Answer 8
In regards to the series elastic component, what happens in an
isometric contraction? Correct Answer sarcomeres shorten but
elastic elements stretch so muscle length remains the same
tendons stretching out
In regards to the series elastic component, what happens in an
isotonic contraction? Correct Answer sarcomeres shorten,
elastic components are stretched entirely
Is cardiac contraction intrinsic? Correct Answer yes
Is curare a nicotinic receptor agonist or antagonist? Correct
Answer receptor antagonist
Muscle Questions With Complete Solutions
Are the somatic motor neurons to type 1 or type 2b smaller?
Correct Answer type 1
Can smooth muscle contraction be intrinsic? Correct Answer
yes
Can you get another AP to take place before the first contractile
event is over? Correct Answer yes
Does aerobic or anaerobic respiration cause fatigue faster?
Correct Answer anaerobic
Does an isometric or isotonic contraction have a longer latent
period? Correct Answer isotonic
Does an isometric or isotonic contraction have a shorter latent
period? Correct Answer isometric
Does peripheral or central fatigue happen first? Correct Answer
central
Does skeletal or cardiac muscle have a higher optimal length?
Correct Answer skeletal
Does STO or FTG have a larger fiber diameter? Correct
Answer FTG
,Does the latent period occur before or after the shortening of a
muscle in an isotonic contraction? Correct Answer after
How is Ca2+ removed from the cytosol? Correct Answer
primary active uniporter
How is phosphocreatine used for energy? Correct Answer
phosphate group is popped off so there's a quick access to ATP
How many motor neurons innervate a single muscle fiber?
Correct Answer one
How many muscle fibers can a motor unit innervate? Correct
Answer one or multiple
How much ATP does anaerobic glycolysis make? Correct
Answer 2
How much ATP does oxidative phosphorylation produce?
Correct Answer 36-38
How much ATP is made from oxidative phosphorylation?
Correct Answer 36-38ATP
If the DHP receptors are open, are the ryanodine receptors
opened or closed? Correct Answer opened
If the DHP receptors are relaxed, are the ryanodine receptors
opened or closed? Correct Answer closed
, If the K+ levels in the ECF are increasing, what happens to the
Vm? Correct Answer it gets depolarized
If the load on a muscle is greater than the tension it can generate,
will the muscle move into an isotonic contraction? Correct
Answer no
If the muscle is lengthening, what is happening to the
crossbridge cycling? Correct Answer ZOO will go away and
the crossbridges won't have anything to grab onto
If the muscle is shortening, what is happening to the crossbridge
cyling? Correct Answer actin interference
In regards to the ATP in a muscle cell, how many muscle
twitches can occur? Correct Answer 8
In regards to the series elastic component, what happens in an
isometric contraction? Correct Answer sarcomeres shorten but
elastic elements stretch so muscle length remains the same
tendons stretching out
In regards to the series elastic component, what happens in an
isotonic contraction? Correct Answer sarcomeres shorten,
elastic components are stretched entirely
Is cardiac contraction intrinsic? Correct Answer yes
Is curare a nicotinic receptor agonist or antagonist? Correct
Answer receptor antagonist
