and Answers Updated 2026
Each muscle fiber is surrounded by a connective tissue called? - AnswerEndomysium
What is released from the sarcoplasmic reticulum into the myofibril, causing tension
development in a muscle? - AnswerCalcium 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? - AnswerEccentric
What is the thick structural protein inside the sarcomere? - AnswerMyosin
A muscle fiber that is small in diameter has a slow contraction speed, and a high capillary
density would be classified as? - AnswerType I
Through which of the following valves does blood flow after contraction of the right atrium?
- AnswerTricupsid
During a typical electrocardiogram, atrial depolarization is represented by? - AnswerP-wave
While reading an ECG, electrical potential that depolarizes the ventricles is represented by? -
AnswerQRS 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? - AnswerCapillaries
Where are normal rhythmic electrical impulses initiated in the heart? - AnswerSinoatrial (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? - AnswerGolgi tendon organ
An athlete training for a marathon would benefit from having a high concentration of which
muscle fiber type? - AnswerType 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? - AnswerStrength gains
compromised
Which of the following represents the correct transmission of the heart's electrical impulse?
- AnswerSA node, AV node, AV bundle, Purkinje fibers
Which of the following represents a muscle of expiration? - AnswerInternal Intercostal
Identify the correct path in which inhaled air is distributed to the lungs. - AnswerTrachea,
Bronchi, Bronchioles, Alveoli
Heavy resistance exercise has what effect on cardiac output? - AnswerNo change
What is the value of a metabolic equivalent (MET) - Answer3.5 ml of oxygen per kilogram of
body weight per minute
The phosphagen energy system would primarily supply ATP for which of the following
activities? - Answer100-m dash
Which of the following pathways/systems has the highest capacity for energy production? -
AnswerOxidation 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. -
AnswerDepleted muscle glycogen
Which of the following is the primary energy system at work when the body is at rest? -
AnswerOxidative
ATP used during the 400-m dash would be primarily supplied from what energy system? -
AnswerFast glycolysis
Which of the following has the greatest influence on the energy system used for a given
exercise? - AnswerIntensity
Which energy system results in the formation of the organic end product lactic acid? -
AnswerFast 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? - AnswerFat 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? - Answer1:15
Aerobic training added to the training of anaerobic athletes (Combination Training) can lead
to all of the following EXCEPT? - AnswerIncreased speed
All of the following are physiological roles of growth hormone EXCEPT - AnswerIncrease
glycogen synthesis
Which of the following exercises would promote the highest increase in serum testosterone
concentrations? - Answer3 sets of deadlifts at 90% of one-repetition maximum