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CSCS study - All questions from Ed. 4 book Question and answers correctly solved

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CSCS study - All questions from Ed. 4 book Question and answers correctly solved Which of the follow substances regulates muscle actions? - Potassium, calcium, troponin, tropomyosin - correct answer Calcium Which of the following substances acts at the NMJ to excite the muscle fibers of ...

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  • November 28, 2024
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CSCS study - All questions from Ed. 4
book Question and answers correctly
solved
Which of the follow substances regulates muscle actions?
- Potassium, calcium, troponin, tropomyosin - correct answer ✔Calcium


Which of the following substances acts at the NMJ to excite the muscle fibers
of a motor unit?
- ACH, ATP, creatine phosphate, serotonin - correct answer ✔ACH


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?
- GTO, muscle spindle, extrafusal muscle, pacinian corpuscle - correct
answer ✔Muscle Spindle


From which of the following is the heart's electrical impulse normally initiated?
- SA node,
- AV node,
- the brain,
- the sympathetic nervous system - correct answer ✔SA node


Which of the following occurs during the QRS complex of a typical ECG?
- depolarization of the atrium
- repolarization of the atrium
- depolarization of the ventricle

,- repolarization of the ventricle - correct answer ✔Repolarization of the
atrium and depolarization of the ventricle


Which of the following is the definition of power?
- Mass x acceleration
- force x distance
- force x velocity
- torque x time - correct answer ✔Force x veloctiy


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 2/3rds - correct answer ✔Body weight to the 2/3rds


During a free weight exercise, muscle force varies with which of the following?
- Perpendicular distance from the weight to the body joint,
- joint angle
- movement acceleration
- movement velocity squared - correct answer ✔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?
- Sagittal
- perpendicular

, - frontal
- transverse - correct answer ✔Saggital


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?
- First class
- second class
- third class - correct answer ✔First and third class


Which of the following substances can be metabolized anaerobically?
- Glycerol
- glucose
- amino acids
- free fatty acids - correct answer ✔Glucose


Which of the following reactions is the primary cause of metabolic
acidosis( the decrease of intramuscular pH during high intensity, fatiguing
exercise)?
- ATP>>ADP + P + H
- Pyruvate + NADH >> lactate + NAD+
- ADP+ creatine phosphate>>ATP + creatine
- Fructose6phosphate>>fructose1,6biphosphate - correct answer ✔ATP >>
ADP + P + H


Which of the following energy systems produces ATP at the the quickest rate?
- phosphagen,
- aerobic glycolysis

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