Complete Solutions
/. Each muscle fiber is surrounded by a connective tissue called? - Answer-
Endomysium
/.What is released from the sarcoplasmic reticulum into the myofibril, causing tension
development in a muscle? - 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? - Answer-Eccentric
/.What is the thick structural protein inside the sarcomere? - Answer-Myosin
/.A muscle fiber that is small in diameter has a slow contraction speed, and a high
capillary density would be classified as? - Answer-Type I
/.Through which of the following valves does blood flow after contraction of the right
atrium? - Answer-Tricupsid
/.During a typical electrocardiogram, atrial depolarization is represented by? - Answer-
P-wave
/.While reading an ECG, electrical potential that depolarizes the ventricles is
represented by? - 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? - Answer-Capillaries
/.Where are normal rhythmic electrical impulses initiated in the heart? - 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? - Answer-Golgi tendon organ
/.An athlete training for a marathon would benefit from having a high concentration of
which muscle fiber type? - 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? - Answer-
Strength gains compromised
/.Which of the following represents the correct transmission of the heart's electrical
impulse? - Answer-SA node, AV node, AV bundle, Purkinje fibers
/.Which of the following represents a muscle of expiration? - Answer-Internal Intercostal
/.Identify the correct path in which inhaled air is distributed to the lungs. - Answer-
Trachea, Bronchi, Bronchioles, Alveoli
/.Heavy resistance exercise has what effect on cardiac output? - Answer-No change
/.What is the value of a metabolic equivalent (MET) - 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? - Answer-100-m dash
/.Which of the following pathways/systems has the highest capacity for energy
production? - 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. - Answer-
Depleted muscle glycogen
/.Which of the following is the primary energy system at work when the body is at rest? -
Answer-Oxidative
/.ATP used during the 400-m dash would be primarily supplied from what energy
system? - Answer-Fast glycolysis
/.Which of the following has the greatest influence on the energy system used for a
given exercise? - Answer-Intensity
/.Which energy system results in the formation of the organic end product lactic acid? -
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? - 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? - Answer-1:15
, /.Aerobic training added to the training of anaerobic athletes (Combination Training) can
lead to all of the following EXCEPT? - Answer-Increased speed
/.All of the following are physiological roles of growth hormone EXCEPT - Answer-
Increase glycogen synthesis
/.Which of the following exercises would promote the highest increase in serum
testosterone concentrations? - Answer-3 sets of deadlifts at 90% of one-repetition
maximum
/.Growth hormone stimulates what organ to secrete Insulin-Like Growth Factors? -
Answer-Liver
/.Which of the following variables would promote the greatest increased serum
testosterone levels? - Answer-Short rest intervals (30 sec to 1 min)
/.Growth hormone is secreted by which of the following? - Answer-Anterior Pituitary
/.Which of the following locations produce testosterone in women? - Answer-Ovaries
and Adrenal Gland
/.All of the following are important signal mechanisms for IGF release EXCEPT? -
Answer-Testosterone
/.Catecholamines act as all of the following EXCEPT? - Answer-Vasoconstrictors
/.For women still having a menstrual cycle, which of the following hormones is higher
than men at rest? - Answer-Growth Hormone
/.The skull, vertebral column, ribs, and sternum are referred to as the? - Answer-Axial
Skeleton
/.The sutures of the skull are an example of what type of joint? - Answer-Fibrous
/.When passing a basketball which muscles act as the agonist and antagonist? -
Answer-Agonist: Triceps, Antagonist: Biceps
/.A lever in which the muscle force and resistive force act on opposite sides of the
fulcrum is referred to as? - Answer-First class
/.A volleyball player is performing standing plantar flexion against resistance. Which of
the following types of levers occurs at the ball of the foot during this exercise? - Answer-
Second class
/.Punting a football requires flexion of the hip that occurs in which plane of action? -
Answer-Sagittal