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NSCA CSCS EXAM REVIEW; Questions & Answers 100% Solved

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NSCA CSCS EXAM REVIEW; Questions & Answers 100% Solved Which of the following substances regulates muscle actions? potassium calcium troponin tropomyosin Answer-calcium Which of the following substances acts at the NMJ to excite the muscle fibers of a motor unit? acetylcholine ATP creati...

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  • August 8, 2024
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NSCA CSCS EXAM REVIEW; Questions &
Answers 100% Solved
Which of the following substances regulates muscle actions?




potassium

calcium

troponin

tropomyosin Answer-calcium




Which of the following substances acts at the NMJ to excite the muscle fibers of a motor unit?



acetylcholine

ATP

creatine phosphate

serotonin Answer-acetylcholine




When throwing a baseball, an athlete's arm is rapidly stretched just before throwing the ball.
Which of the following structures detects and responds to that stretch by reflexively increasing
muscle activity?



golgi tendon organ

muscle spindle

extrafusal muscle

, NSCA CSCS EXAM REVIEW; Questions &
Answers 100% Solved
pacinian corpuscle Answer-muscle spindle




From which of the following is the heart's electrical impulse normally initiated?




AV node

SA node

the brain

the sympathetic nervous system Answer-SA node




Which of the following occurs during the QRS complex of a typical ECG?

1. depolarization of the atrium

2. repolarization of the atrium

3. repolarization of the ventricle

4. depolarization of the ventricle

a. 1 and 3 only

b. 2 and 4 only

c. 1, 2, and 3 only

d. 2, 3, and 4 only Answer-b. 2 and 4 only




Which of the following is the definition of power?

, NSCA CSCS EXAM REVIEW; Questions &
Answers 100% Solved
mass x acceleration

force x distance

force x velocity

torque x time Answer-force x velocity




To compare performances of Olympic weightlifters of different body weights, the classic formula
divides the load lifted by the athlete's




body weight

body weight squared

lean body weight

body weight to the two-thirds power Answer-body weight to the two-thirds power




During a free weight exercise, muscle force varies with which of the following?



1. perpendicular distance from the weight to the body joint

2. joint angle

3. movement acceleration

4. movement velocity squared



a. 1 and 2 only

, NSCA CSCS EXAM REVIEW; Questions &
Answers 100% Solved
b. 1 and 4 only

c. 1, 2, and 3 only

d. 2, 3, and 4 only Answer-a. 1 and 2 only (perpendicular distance from the weight to the
body joint AND joint angle)




A vertical jump involves knee, hip, and shoulder movement primarily in which of the following
anatomical planes?



sagittal

perpendicular

frontal

transverse Answer-sagittal




An athlete is performing a concentric isokinetic elbow flexion and extension exercise. Which of
the following type(s) of lever occur(s) at the elbow during this exercise?




1. 1st class

2. 2nd class

3. 3rd class



a. 1 only

b. 2 only

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