AND 100% CORRECT ANSWERS|LATEST
During a muscle contraction what structures do the cross bridges attach to? -
ANSWER actin
What substance helps regulate muscle actions? - ANSWER calcium
What substance excites the muscle fibers of a motor unit? - ANSWER acetylcholine
What muscle fiber type is most beneficial for a marathon runner? - ANSWER type I
When a muscle is rapidly stretched prior to an explosive movement like throwing for
example, which structure detects and responds to that stretch by reflexively increasing
muscle activity? - ANSWER muscle spindle
The hearts electrical impulse is first initiated by the _____ . - ANSWER SA node
During the QRS complex of a typical ECG repolarization occurs in the ____. -
ANSWER atrium
During the QRS complex of typical ECG depolarization occurs in the ___. -
ANSWER ventricle
Fast twitch muscle fibers - ANSWER type II
1
,During a muscle contraction when the sarcoplasmic reticulum is stimulated to release
calcium ions, the calcium binds to the ____. - ANSWER troponin
____ is the ultimate source of energy for a muscular contraction - ANSWER ATP
Which of these substances can be metabolized anaerobically? -
ANSWER carbohydrates
The primary energy system used during a training session depends primarily on the _____. -
ANSWER intensity
The production of lactic acid results from the activation of which energy system? -
ANSWER fast glycolysis
Which energy system has the highest rate of energy production? - ANSWER fast
glycolysis
How many ATP are produced by the oxidative energy system from the degradation of 1
glucose molecule? - ANSWER 38
Which energy system is predominantly active at the initiation of all exercise? -
ANSWER phosphagen
Which enzymes catalyzes the rate-limiting step of glycolysis? -
ANSWER phosphofructokinase (PFK)
After a bout of resistance training, ______ provide the body with information about the
amount of physiological stress, metabolic demands of exercise, and type of physiological
stress. - ANSWER acute hormonal secretions
2
, Which hormones enhance muscle tissue growth - ANSWER growth hormone and
cortisol
1 main physiological role of growth hormone is that it _____ glucose utilization -
ANSWER decreases
1 main physiological role of growth hormone is that it _____ amino acid transport across cell
membranes - ANSWER increases
1 main physiological role of growth hormone is that it _____ protein synthesis -
ANSWER increases
1 main physiological role of growth hormone is that it _____ glycogen synthesis -
ANSWER decreases
1 main physiological role of growth hormone is that it _____ utilization of fatty acids -
ANSWER increases
Which hormone has the greatest influence on neural changes? -
ANSWER testosterone
Which hormone level is higher in women than men when at rest? - ANSWER HGH
What format of resistance training workout promotes the highest growth hormone increases
following the exercise session? - ANSWER 30 second rest- high volume - 3 sets
The knee is what type of a joint? - ANSWER Synovial
3
During a muscle contraction what structures do the cross bridges attach to? -
ANSWER actin
What substance helps regulate muscle actions? - ANSWER calcium
What substance excites the muscle fibers of a motor unit? - ANSWER acetylcholine
What muscle fiber type is most beneficial for a marathon runner? - ANSWER type I
When a muscle is rapidly stretched prior to an explosive movement like throwing for
example, which structure detects and responds to that stretch by reflexively increasing
muscle activity? - ANSWER muscle spindle
The hearts electrical impulse is first initiated by the _____ . - ANSWER SA node
During the QRS complex of a typical ECG repolarization occurs in the ____. -
ANSWER atrium
During the QRS complex of typical ECG depolarization occurs in the ___. -
ANSWER ventricle
Fast twitch muscle fibers - ANSWER type II
1
,During a muscle contraction when the sarcoplasmic reticulum is stimulated to release
calcium ions, the calcium binds to the ____. - ANSWER troponin
____ is the ultimate source of energy for a muscular contraction - ANSWER ATP
Which of these substances can be metabolized anaerobically? -
ANSWER carbohydrates
The primary energy system used during a training session depends primarily on the _____. -
ANSWER intensity
The production of lactic acid results from the activation of which energy system? -
ANSWER fast glycolysis
Which energy system has the highest rate of energy production? - ANSWER fast
glycolysis
How many ATP are produced by the oxidative energy system from the degradation of 1
glucose molecule? - ANSWER 38
Which energy system is predominantly active at the initiation of all exercise? -
ANSWER phosphagen
Which enzymes catalyzes the rate-limiting step of glycolysis? -
ANSWER phosphofructokinase (PFK)
After a bout of resistance training, ______ provide the body with information about the
amount of physiological stress, metabolic demands of exercise, and type of physiological
stress. - ANSWER acute hormonal secretions
2
, Which hormones enhance muscle tissue growth - ANSWER growth hormone and
cortisol
1 main physiological role of growth hormone is that it _____ glucose utilization -
ANSWER decreases
1 main physiological role of growth hormone is that it _____ amino acid transport across cell
membranes - ANSWER increases
1 main physiological role of growth hormone is that it _____ protein synthesis -
ANSWER increases
1 main physiological role of growth hormone is that it _____ glycogen synthesis -
ANSWER decreases
1 main physiological role of growth hormone is that it _____ utilization of fatty acids -
ANSWER increases
Which hormone has the greatest influence on neural changes? -
ANSWER testosterone
Which hormone level is higher in women than men when at rest? - ANSWER HGH
What format of resistance training workout promotes the highest growth hormone increases
following the exercise session? - ANSWER 30 second rest- high volume - 3 sets
The knee is what type of a joint? - ANSWER Synovial
3
