Answers
Superior The pelvis is located ___________ to the patella
Sarcomere Which of the following is the smallest contractile unit of skeletal muscle?
Fatigue resistant with high aerobic energy supply Which of the following describes Type 1
fibers?
Right Atrium, Right Ventricle, lungs, left atrium, left ventricle Which of the following
describes the flow of blood
60-80 On average how many times per minute does the SA node discharge at rest?
Appendicular and Axial Which of the following are the two main divisions of the skeletal
system?
Gymnasts Some of the highest bone mineral densities have been seen in which of the
following types of athletes?
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Biaxial What joint comprises the ankle and wrist joints?
Resting, excitation-contraction coupling, contraction, recharge, relaxation Which of the
following is the order of the phases of a muscle contraction?
Sympathetic; increases The chronotropic effect is caused by stimulation of the
____________ nervous system and causes the heart rate to ___________
Farther from; a heavier Two individuals of the same body mass are lifting weights.
Assuming all other factors to be equal, the person with tendons inserted on the bone
_______________ the joint center should be able to lift _______________ weight.
Sagittal Which anatomical plane divides the body into left and right sections?
150 N An athlete in the weight room is performing the barbell bench press. If he moves a
mass of 75 kg with an acceleration of 2 m/s^2, what force is he expecting?
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Recruitment; rate coding Neural control affects the maximal force output of a muscle by
determining which and how many motor units are involved in a muscle contraction and the rate
at which the motor units are fired. These two factors are known as what, respectively?
Stimulates real-life activities All of the following are considered to be advantages when
using weight-stack machines EXCEPT?
Friction Which of the following is the resistive force encountered when one attempts to
move an object while it is pressed against another object?
L4-L5 and L-5-S1 Eighty-five to ninety percent of all intervertebral disk herniations occur
at what two locations?
504 J An athlete produced 840 watts of power in 0.6 seconds. How much work did this
individual perform during the exercise?
Biceps brachii Which of the muscles of muscle groups have fusiform pennation?
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Body mass increases more rapidly than muscular strength As an athlete's body size
increases, which of the following describes how many body mass and muscular strength change?
Mitochondria The Krebs cycle occurs in which portion of the cell?
The concentrations of reactants or products will drive the direction of the reactions The
law of mass action states which of the following?
High Intensity; Shifts to the right An aerobic endurance athlete is trying to give himself a
competitive edge over his opponents. To improve his lactate threshold, what type of training
should he engage in, and in what direction would this shift his threshold?
Phosphagen and oxidative Two athletes are competing in upcoming competitions, a
weightlifting meet and a marathon. Which energy systems will each be primarily using,
respectively?
Oxygen deficit Which of the following describes the portion of the total energy cost of
exercise that must be supplied through anaerobic mechanisms due to the slow response of the
aerobic system to the initial increase in the demand for energy?