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CSCS Scientific Foundations Practice Questions 4th ed and answers verified to pass
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CSCS Scientific Foundations Practice Questions 4th ed and answers verified to pass Which of the following substances regulates muscle actions? a. potassium b. calcium c. troponin d. tropomyosin - correct answer b Which of the following substances acts at the neuromuscular junction t...

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  • November 28, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • cscs scientific foundations practice questions 4th
  • cscs scientific foundations practice

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CSCS Scientific Foundations Practice
Questions 4th ed and answers verified
to pass
Which of the following substances regulates muscle actions?
a. potassium
b. calcium
c. troponin
d. tropomyosin - correct answer ✔b


Which of the following substances acts at the neuromuscular junction to excite
the muscle fibers of a motor unit?
a. acetylcholine
b. AT P
c. creatine phosphate
d. serotonin - correct answer ✔a


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?
a. Golgi tendon organ
b. muscle spindle
c. extrafusal muscle
d. Pacinian corpuscle - correct answer ✔b


From which of the following is the heart's electrical impulse normally initiated?
a. AV node

,b. SA node
c. the brain
d. the sympathetic nervous system - correct answer ✔b


Which of the following occurs during the QRS complex of a typical ECG?
I. depolarization of the atrium
II. repolarization of the atrium
III. repolarization of the ventricle
IV. depolarization of the ventricle
a. I and III only
b. II and IV only
c. I, II, and III only
d. II, III, and IV only - correct answer ✔b


Which of the following is the definition of power?
a. (mass) ∙ (acceleration)
b. (force) ∙ (distance)
c. (force) ∙ (velocity)
d. (torque) ∙ (time) - correct answer ✔c


To compare performances of Olympic weightlifters of different body weights,
the classic formula divides the load lifted by the athlete's
a. body weight
b. body weight squared
c. lean body weight
d. body weight to the two-thirds power - correct answer ✔d

, During a free weight exercise, muscle force varies with which of the following?
I. perpendicular distance from the weight to the body joint II. joint angle
III. movement acceleration
IV. movement velocity squared
a. I and III only
b. II and IV only
c. I, II, and III only
d. II, III, and IV only - correct answer ✔a


A vertical jump involves knee, hip, and shoulder movement primarily in which
of the following anatomical planes?
a. sagittal
b. perpendicular
c. frontal
d. transverse - correct answer ✔a


An athlete is performing a concentric isokinetic elbow flexion and extension
exercise. Which of the following type(s) of levers occur(s) at the elbow during
this exercise? I. first class
II. second class
III. third class
a. I only
b. II only
c. I and III only
d. II and III only - correct answer ✔c

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