CISSN CHAPTER 1 (ENERGY SYSTEMS AND SKELETAL
MUSCLE PLASTICITY) EXAM QUESTIONS AND
ANSWERS,
During ______ seconds of maximal exercise, the ability of glycolysis to
produce ATP is double that of the ATP-CP System. - ANS -30 seconds
During 30 seconds of maximal exercise, the Immediate Energy System is
responsible for approximately _____% of energy provision (through ATP
degradation and subsequent re-synthesis), approximately ______% of
ATP is attributed to "fast" glycolysis (aka the Lactic Acid System), and
approximately ______% of the energy provision is form the Oxidative
system. - ANS --20%
-50%
-30%
____________________ is the only nutrient capable of generating ATP
through glycolysis. The rapid utilization of this nutrient is a result of the
production of AMP and inorganic phosphate. - ANS -Carbohydrate
During lower intensity, sustained exercise, the need for ATP is
significant, but the rate of production is not as pronounced as during
the Lactic Acid System. As a result, ATP is produced ________________,
by way of mitochondrial respiration. - ANS -oxidatively
,The _________________ system involves the combustion of the
primary macronutrients, carbohydrates, and fatty acids, utilizing oxygen
that is present in the mitochondria. - ANS -Oxidative system
Carbohydrate can be obtained from _______________ in the blood
(either from the diet or from liver glycogenolysis) or form muscle
glycogenolysis. - ANS -glucose
Fatty acids even be obtained from the _______________ or
_____________ (from adipose tissue lipolysis.) - ANS -muscle fibers or
blood
Assuming adequate macronutrient substrate, the ________________
System is a long duration energy system. - ANS -Oxidative System
Typically, within _____ minutes of exercise, the Oxidative System is the
dominant system for generating ATP for cellular energy. - ANS -5
minutes
The contractile unit within each muscle fiber. - ANS -Sarcomere
, Each sarcomere contains the myofibril proteins ______________ and
______________ (comprises the thick and thin filament, respectively). -
ANS -myosin and actin
The interaction of myosin and actin (aka. "_________________ theory")
allows for muscle contraction. - ANS -sliding filament theory
Human skeletal muscle fibers are ______________ in both their
biochemical and functional capabilities, primarily contingent on the
manner in which they are activated to contract. - ANS -heterogenous
A ________________ is the true functional unit of the neuromuscular
system, because as one a-motor nerve is activated (depolarized) and
propagates its impulse to the muscle, then several muscle fibers are
activated (depolarized) to contract. - ANS -motor unit
What are the three primary classes of fiber types? - ANS --Type I (slow-
twitch)
-Type IIa (fast-twitch intermediate)
-Type IIx (fast-twitch)
Type _____ muscle fibers have a limited anaerobic capacity and are
primarily "aerobic" fibers and are referred to as slow oxidative (SO)
MUSCLE PLASTICITY) EXAM QUESTIONS AND
ANSWERS,
During ______ seconds of maximal exercise, the ability of glycolysis to
produce ATP is double that of the ATP-CP System. - ANS -30 seconds
During 30 seconds of maximal exercise, the Immediate Energy System is
responsible for approximately _____% of energy provision (through ATP
degradation and subsequent re-synthesis), approximately ______% of
ATP is attributed to "fast" glycolysis (aka the Lactic Acid System), and
approximately ______% of the energy provision is form the Oxidative
system. - ANS --20%
-50%
-30%
____________________ is the only nutrient capable of generating ATP
through glycolysis. The rapid utilization of this nutrient is a result of the
production of AMP and inorganic phosphate. - ANS -Carbohydrate
During lower intensity, sustained exercise, the need for ATP is
significant, but the rate of production is not as pronounced as during
the Lactic Acid System. As a result, ATP is produced ________________,
by way of mitochondrial respiration. - ANS -oxidatively
,The _________________ system involves the combustion of the
primary macronutrients, carbohydrates, and fatty acids, utilizing oxygen
that is present in the mitochondria. - ANS -Oxidative system
Carbohydrate can be obtained from _______________ in the blood
(either from the diet or from liver glycogenolysis) or form muscle
glycogenolysis. - ANS -glucose
Fatty acids even be obtained from the _______________ or
_____________ (from adipose tissue lipolysis.) - ANS -muscle fibers or
blood
Assuming adequate macronutrient substrate, the ________________
System is a long duration energy system. - ANS -Oxidative System
Typically, within _____ minutes of exercise, the Oxidative System is the
dominant system for generating ATP for cellular energy. - ANS -5
minutes
The contractile unit within each muscle fiber. - ANS -Sarcomere
, Each sarcomere contains the myofibril proteins ______________ and
______________ (comprises the thick and thin filament, respectively). -
ANS -myosin and actin
The interaction of myosin and actin (aka. "_________________ theory")
allows for muscle contraction. - ANS -sliding filament theory
Human skeletal muscle fibers are ______________ in both their
biochemical and functional capabilities, primarily contingent on the
manner in which they are activated to contract. - ANS -heterogenous
A ________________ is the true functional unit of the neuromuscular
system, because as one a-motor nerve is activated (depolarized) and
propagates its impulse to the muscle, then several muscle fibers are
activated (depolarized) to contract. - ANS -motor unit
What are the three primary classes of fiber types? - ANS --Type I (slow-
twitch)
-Type IIa (fast-twitch intermediate)
-Type IIx (fast-twitch)
Type _____ muscle fibers have a limited anaerobic capacity and are
primarily "aerobic" fibers and are referred to as slow oxidative (SO)
