CSCS STUDY QUESTIONS (CHAPTER
1-6) WITH CORRECT ANSWERS
What substance regulates muscle actions?
a. potassium
b. calcium
c. troponin
d. tropomyosin - Correct Answers -b. Calcium
What substance acts at the neuromuscular junction to excite the muscle fibers of a
motor unit?
a. acetylcholine
b. ATP
c. creatine phosphate
d. serotonin - Correct Answers -a. Acetylcholine
What structure within the muscle detects and responds to a stretch by reflexively
increasing muscle activity?
a. Golgi tendon organ
b. muscle spindle
c. extrafusal muscle
d. Pacinian corpuscle - Correct Answers -b. Muscle Spindle
The heart's electrical implulse is normally initiated here
a. AV node
b. SA node
c. the brain
d. the sympathetic nervous system - Correct Answers -b. Sinoatrial (SA) Node
This 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 Answers -b. Repolarization of the atrium and
depolarization of the ventricle
The definition of power
a. (mass) ∙ (acceleration)
b. (force) ∙ (distance)
c. (force) ∙ (velocity)
d. (torque) ∙ (time) - Correct Answers -c. Force x Velocity
To compare 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 Answers -d. Bodyweight to the 2/3's
power
During a free weight exercise, muscle force varies with ______________________.
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 Answers -a. Perpendicular distance from the weight to the
body joint and movement acceleration
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 Answers -a. Sagittal
Which of the following hormones enhance(s) muscle tissue growth?
I. growth hormone
II. cortisol
1-6) WITH CORRECT ANSWERS
What substance regulates muscle actions?
a. potassium
b. calcium
c. troponin
d. tropomyosin - Correct Answers -b. Calcium
What substance acts at the neuromuscular junction to excite the muscle fibers of a
motor unit?
a. acetylcholine
b. ATP
c. creatine phosphate
d. serotonin - Correct Answers -a. Acetylcholine
What structure within the muscle detects and responds to a stretch by reflexively
increasing muscle activity?
a. Golgi tendon organ
b. muscle spindle
c. extrafusal muscle
d. Pacinian corpuscle - Correct Answers -b. Muscle Spindle
The heart's electrical implulse is normally initiated here
a. AV node
b. SA node
c. the brain
d. the sympathetic nervous system - Correct Answers -b. Sinoatrial (SA) Node
This 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 Answers -b. Repolarization of the atrium and
depolarization of the ventricle
The definition of power
a. (mass) ∙ (acceleration)
b. (force) ∙ (distance)
c. (force) ∙ (velocity)
d. (torque) ∙ (time) - Correct Answers -c. Force x Velocity
To compare 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 Answers -d. Bodyweight to the 2/3's
power
During a free weight exercise, muscle force varies with ______________________.
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 Answers -a. Perpendicular distance from the weight to the
body joint and movement acceleration
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 Answers -a. Sagittal
Which of the following hormones enhance(s) muscle tissue growth?
I. growth hormone
II. cortisol
