CSCS Practice Exam 230 Questions with Complete Solutions Each muscle fiber is surrounded by a connective tissue called? - Correct Answer Endomysium What is released from the sarcoplasmic reticulum into the myofibril, causing tension development in a muscle? - Correct Answer Calcium ions that bind to troponin What type of muscular contraction occurs in the pectoralis major during the slow, controlled, downward phase of a bench press? - Correct Answer Eccentric What is the thick structural protein inside the sarcomere? - Correct Answer Myosin A muscle fiber that is small in diameter has a slow contraction speed, and a high capillary density would be classified as? - Correct Answer Type I Through which of the following valves does blood flow after contraction of the right atrium? - Correct Answer Tricupsid During a typical electrocardiogram, atrial depolarization is represented by? - Correct Answer P-wave While reading an ECG, electrical potential that depolarizes the ventricles is represented by? - Correct Answer QRS complex What blood vessel functions to exchange oxygen, fluid, nutrients, electrolytes, hormones, and other substances between the blood and the interstitial fluid in the various tissues of the body? - Correct Answer Capillaries Where are normal rhythmic electrical impulses initiated in the heart? - Correct Answer Sinoatrial (SA) node 1 / 3
When performing a biceps curl, tension in the biceps brachii muscle increases. Which of the following structures detects and responds to the tension by reflexively reducing muscle activation? - Correct Answer Golgi tendon organ An athlete training for a marathon would benefit from having a high concentration of which muscle fiber type? - Correct Answer Type I A college football player decides to add 30 minutes of intense stationary cycling every other day to his current resistance training program. Which of the following best describes the effect the stationary cycling will have on his performance? - Correct Answer Strength gains compromised Which of the following represents the correct transmission of the heart's electrical impulse? - Correct Answer SA node, AV node, AV bundle, Purkinje fibers Which of the following represents a muscle of expiration? - Correct Answer Internal Intercostal Identify the correct path in which inhaled air is distributed to the lungs. - Correct Answer Trachea, Bronchi, Bronchioles, Alveoli Heavy resistance exercise has what effect on cardiac output? - Correct Answer No change What is the value of a metabolic equivalent (MET) - Correct Answer 3.5 ml of oxygen per kilogram of body weight per minute The phosphagen energy system would primarily supply ATP for which of the following activities? - Correct Answer 100-m dash Which of the following pathways/systems has the highest capacity for energy production? - Correct Answer Oxidation of fats and proteins A male athlete fatigues during the running of a marathon and must pull out of the race, which is the most probable factor that limited his performance in the race. - Correct Answer Depleted muscle glycogen 2 / 3
Which of the following is the primary energy system at work when the body is at rest? - Correct Answer Oxidative ATP used during the 400-m dash would be primarily supplied from what energy system? - Correct Answer Fast glycolysis Which of the following has the greatest influence on the energy system used for a given exercise? - Correct Answer Intensity Which energy system results in the formation of the organic end product lactic acid? - Correct Answer Fast glycolysis A female weightlifter is only able to complete 8 repetitions of a 10 RM set of power cleans. Which of the following factors is the least likely to have contributed to her missed repetitions? - Correct Answer Fat Stores You decide to use interval training to stress the phosphagen energy system, which of the following
would be an appropriate work to rest period ratio? - Correct Answer 1:15
Aerobic training added to the training of anaerobic athletes (Combination Training) can lead to all of the following EXCEPT? - Correct Answer Increased speed All of the following are physiological roles of growth hormone EXCEPT - Correct Answer Increase glycogen synthesis Which of the following exercises would promote the highest increase in serum testosterone concentrations? - Correct Answer 3 sets of deadlifts at 90% of one-repetition maximum Growth hormone stimulates what organ to secrete Insulin-Like Growth Factors? - Correct Answer Liver Which of the following variables would promote the greatest increased serum testosterone levels? - Correct Answer Short rest intervals (30 sec to 1 min)
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