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NSCA-CSCS CHAPTER 1 EXAM 2024 WITH 100% ACCURATE SOLUTIONS
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NSCA-CSCS CHAPTER 1 EXAM 2024 WITH 100% ACCURATE SOLUTIONS
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NSCA-CSCS CHAPTER 1 EXAM 2024WITH 100% ACCURATE SOLUTIONS
To what structures do the cross-bridges attach during muscle action? -
Precise Answer ✔✔Actin
Which substance regulates muscle actions? - Precise Answer
✔✔Calcium
Which substance acts at the neuromuscular junction to excite the muscle
fibers of a motor unit? - Precise Answer ✔✔Acetylcholine
Which muscle fiber type is the MOST beneficial for a marathon runner?
- Precise Answer ✔✔Type I
When throwing a baseball, an athlete's arm is rapidly stretched just prior
to throwing the ball. Which of the following structures detects and
responds to that stretch by reflexively increasing muscle activity? -
Precise Answer ✔✔Muscle Spindle
From what is the heart's electrical impulse normally initiated? - Precise
Answer ✔✔SA Node
, Which of the following occurs during the QRS complex of a typical
ECG? - Precise Answer ✔✔repolarization of the atrium and
depolarization of the ventricle.
A-Band - Precise Answer ✔✔overlapping actin and myosin
acetylcholine - Precise Answer ✔✔Arrival of the action potential at the
nerve terminal causes release of a neurotransmitter, ______, which
diffuses across the neuromuscular junction. Once a sufficient amount is
released, an action potential is generated across the sarcolemma, and the
(muscle)fiber contracts.
Actin and Myosin - Precise Answer ✔✔contractile proteins in muscle
Action potential - Precise Answer ✔✔the change in electrical potential
associated with the passage of an impulse along the membrane of a
muscle cell or nerve cell.
All-or-none Principle - Precise Answer ✔✔the strength by which a
nerve or muscle fiber responds to a stimulus is independent of the
strength of the stimulus. If the stimulus exceeds the threshold potential,
the nerve or muscle fiber will give a complete response; otherwise, there
is no response.
Alveolar Pressure - Precise Answer ✔✔the pressure in centimeters of
water pressure (cmH2O) held within the alveoli of the lungs during
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