Physioex 6
During an isometric contraction - ANSthe skeletal muscle is generating force, but it remains at a
fixed length
The force that results from muscles being stretched is
You correctly answered - ANSpassive force
Active force - ANSs determined by the amount of myosin bound to actin.
When you generate the isometric length-tension curve, which of the following forces will not be
indicated on your
screen? - ANStetanic force
Passive force in skeletal muscle is largely caused by - ANSthe protein titin
Note the dip in total force at a muscle length of
90 mm as compared to the total force at a muscle length of 80 and 100 mm. Why does this
occur? - ANSAt this muscle length, active force has decreased in value and passive force has
not yet increased to a significant value.
When a skeletal muscle is stimulated and generates force but remains at a fixed length -
ANSthe muscle is contracting isometrically.
Which protein is mostly responsible for the development of passive force in a muscle? - ANStitin
In skeletal muscle, active force stimulated through a range of muscle lengths - ANSwill utilize
ATP hydrolysis to drive the cross bridge cycle.
Which of the following is not depicted in a typical skeletal muscle isometric length-tension
curve? - ANStime
Maximal active tension will be produced in a skeletal muscle fiber when - ANSthe fiber is at its
resting length.
During an isometric contraction - ANSthe skeletal muscle is generating force, but it remains at a
fixed length
The force that results from muscles being stretched is
You correctly answered - ANSpassive force
Active force - ANSs determined by the amount of myosin bound to actin.
When you generate the isometric length-tension curve, which of the following forces will not be
indicated on your
screen? - ANStetanic force
Passive force in skeletal muscle is largely caused by - ANSthe protein titin
Note the dip in total force at a muscle length of
90 mm as compared to the total force at a muscle length of 80 and 100 mm. Why does this
occur? - ANSAt this muscle length, active force has decreased in value and passive force has
not yet increased to a significant value.
When a skeletal muscle is stimulated and generates force but remains at a fixed length -
ANSthe muscle is contracting isometrically.
Which protein is mostly responsible for the development of passive force in a muscle? - ANStitin
In skeletal muscle, active force stimulated through a range of muscle lengths - ANSwill utilize
ATP hydrolysis to drive the cross bridge cycle.
Which of the following is not depicted in a typical skeletal muscle isometric length-tension
curve? - ANStime
Maximal active tension will be produced in a skeletal muscle fiber when - ANSthe fiber is at its
resting length.
