EXPH 386 CERTIFICATION SCRIPT 2026
PRACTICE SOLUTIONS GRADED A+
⩥ (Type I... endurance... aerobic).
Answer: slow twitch fiber
⩥ 1) low myosin ATPase activity
2) slow calcium handling and shortening velocity
3) less well-developed glycolytic capacity when compared to type II
fibers
4) large and numerous mitochondria.
Answer: Four characteristics contribute to the slow fibers ability to
generate energy through *oxidative metabolism*:
⩥ -determination of maximal force production
-contraction velocity
-fatigue properties.
Answer: What provides details about the myosin composition of a
muscle and how a muscle handles calcium?
⩥ twitch contraction.
Answer: a brief contractile response of a small number of muscle fibers
within a muscle
,-tells us about the calcium handling properties
⩥ Tetanus contraction.
Answer: a MAX contraction of ALL the fibers within a muscle for a
sustained period of time
⩥ maximal force output (Pt).
Answer: acquired from the peak of force trade
⩥ Contraction time (CT) or Time to peak tension (TPT).
Answer: the time it takes to reach max force
⩥ 1/2 relaxation time (1/2 RT).
Answer: the time it takes for force to decrease 50% of max force
- time it takes to relax after we stop stimulating
⩥ unfused tetanus.
Answer: some degree of relaxation between contraction of groups of
fibers
⩥ fused tetanus.
Answer: no relax; all fibers contracting maximally
, ⩥ force-velocity relationship.
Answer: describes the force that a muscle can generate at any given
shortening velocity during concentric, isometric and eccentric muscle
actions
-most important relationship with skeletal muscle and exercise
⩥ muscle shortening.
Answer: concentric contraction
⩥ muscle lengthening.
Answer: eccentric contraction
⩥ Vmax.
Answer: maximal shortening velocity a muscle can produce against
ZERO resistance
-zero load (no weight)
⩥ Isometric point (peak isometric force).
Answer: this point represents the max weight at which *no mucle
shortening can occur*. this is the intersection between the concentric and
eccentric sections of the relationship
-sticking point, cant move anymore
PRACTICE SOLUTIONS GRADED A+
⩥ (Type I... endurance... aerobic).
Answer: slow twitch fiber
⩥ 1) low myosin ATPase activity
2) slow calcium handling and shortening velocity
3) less well-developed glycolytic capacity when compared to type II
fibers
4) large and numerous mitochondria.
Answer: Four characteristics contribute to the slow fibers ability to
generate energy through *oxidative metabolism*:
⩥ -determination of maximal force production
-contraction velocity
-fatigue properties.
Answer: What provides details about the myosin composition of a
muscle and how a muscle handles calcium?
⩥ twitch contraction.
Answer: a brief contractile response of a small number of muscle fibers
within a muscle
,-tells us about the calcium handling properties
⩥ Tetanus contraction.
Answer: a MAX contraction of ALL the fibers within a muscle for a
sustained period of time
⩥ maximal force output (Pt).
Answer: acquired from the peak of force trade
⩥ Contraction time (CT) or Time to peak tension (TPT).
Answer: the time it takes to reach max force
⩥ 1/2 relaxation time (1/2 RT).
Answer: the time it takes for force to decrease 50% of max force
- time it takes to relax after we stop stimulating
⩥ unfused tetanus.
Answer: some degree of relaxation between contraction of groups of
fibers
⩥ fused tetanus.
Answer: no relax; all fibers contracting maximally
, ⩥ force-velocity relationship.
Answer: describes the force that a muscle can generate at any given
shortening velocity during concentric, isometric and eccentric muscle
actions
-most important relationship with skeletal muscle and exercise
⩥ muscle shortening.
Answer: concentric contraction
⩥ muscle lengthening.
Answer: eccentric contraction
⩥ Vmax.
Answer: maximal shortening velocity a muscle can produce against
ZERO resistance
-zero load (no weight)
⩥ Isometric point (peak isometric force).
Answer: this point represents the max weight at which *no mucle
shortening can occur*. this is the intersection between the concentric and
eccentric sections of the relationship
-sticking point, cant move anymore
