Questions and CORRECT Answers
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
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
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