Which of the following describes all motor units? - Correct Answer contain the same type
of muscle fibers
Which of the following layers of connective tissue is the MOST superficial? - Correct
Answer epimysium
Which of the following is the smallest functional unit of a muscle? - Correct Answer
sarcomere
Which of the following is the form of chemical energy stored in the body that is the most
IMMEDIATELY available for a muscle action? - Correct Answer adenosine triphosphate
Which of the following types of muscle fibers generate the GREATEST amount of force? -
Correct Answer fast-twitch glycolytic
A muscle's ability to sustain maximal force production without undue fatigue is primarily
dependent on which of the following factors? - Correct Answer ratio of type IIa to type IIc
muscle fibers in a motor unit
As compared to a muscle whose fibers are not pennated, all of the following are affected
by a muscle with pennated fibers EXCEPT: - Correct Answer creatine content
Which of the following is an adaptation to aerobic endurance training? - Correct Answer
submax exercise ventilation rate decreases
Performing a resistance training workout causes which of the following changes in blood
pressure or peripheral resistance that does NOT occur during an aerobic exercise
workout? - Correct Answer diastolic blood pressure increases
Which of the following is the primary transport mechanism of oxygen in the blood? -
Correct Answer hemoglobin
Which of the following primarily dictates the degree that an energy system contributes to
the needed production of ATP? - Correct Answer intensity
, Which of the following enzymes catalyzes the rate-limiting step of glycolysis? - Correct
Answer phosphofructokinase
Which of the following determines the net ATP produced from one molecule of G-6-P? -
Correct Answer if it is already in the muscle cell or if it has to be brought into the cell
All of the following determines how a muscle cell will use the end product of glycolysis
EXCEPT: - Correct Answer presence of isocitrate dehydrogenase
Extensive activation of which of the following energy systems is associated with lactic
acid accumulation in the muscle? - Correct Answer fast glycolysis
Carbon dioxide is the primary by-product of which of the following energy pathways? -
Correct Answer Krebs cycle
Which of the following energy systems is capable of producing the GREATEST capacity
of ATP? - Correct Answer oxidative
Which of the following energy systems is capable of producing ATP at the GREATEST
rate? - Correct Answer phosphagen
Which of the following is the recommended rest period between sprint intervals that last
30 seconds? - Correct Answer 2 minutes
10. Depletion of which of the following substrates is frequently associated with fatigue? -
Correct Answer creatine phosphate + glycogen
Which of the following physiological adaptations occur in response to a resistance
training program? - Correct Answer Enhanced motor unit synchronization + Increased
motor unit recruitment
Which of the following structures, when activated, reduces a muscle's ability to create
force? - Correct Answer Golgi tendon organs
Which of the following types of training elicits the greatest increase in the size and
number of mitochondria in a skeletal muscle fiber? - Correct Answer Fartlek running