NSCA/CSCS Exam Study Guide Questions and Correct Answers
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Course
NSCA
Institution
NSCA
roponin - Answer a protein that is situated at regular intervals along the actin filament
and has a high affinity for calcium ions
tropomyosin - Answer funs along the length of the actin filament in the groove of the
double helix
acetylcholine - Answer diffuses across the neuromuscular junction...
NSCA/CSCS Exam Study Guide Questions and
Correct Answers
troponin - Answer a protein that is situated at regular intervals along the actin filament
and has a high affinity for calcium ions
tropomyosin - Answer funs along the length of the actin filament in the groove of the
double helix
acetylcholine - Answer diffuses across the neuromuscular junction, causing excitation of
the sarcolemma
all or none principle - Answer once a sufficient amount of acetylcholine is released, an
action potential is generated across the sarcolemma and the fiber contracts, more
acetylcholine does not cause a stronger contraction.
twitch - Answer each action potential traveling down a motor neuron results in a short
period of activation of the muscle fibers within the motor unit.
tetanus - Answer decreasing time interval between twitches that results in greater
summation of myosin cross bridges binding and force
Type I (slow) - Answer high fatigue resistance, low force production, high capillary
density, high mitochondria size/density, red
Type IIa (fast) - Answer intermediate fatigue resistance, intermediate force production,
intermediate capillary density, intermediate mitochondria size/density, red/white (pink)
,Type IIx (fast) - Answer low fatigue resistance, high force production, low capillary
density, low mitochondria size/density, white
recruitment - Answer increase in force through varying the number of motor units
activated
preloading - Answer when weights are lifted, since sufficient force must be developed to
overcome the inertia of the weights
proprioceptors - Answer specialized sensory receptors located within joints, muscles,
and tendons sensitive to pressure and tension, relay information regarding muscle
dynamics to conscious and subconscious parts of the CNS
muscle spindles - Answer proprioceptors that consist of several modified muscle fires
enclosed in a sheath of connective tissue, provide information regarding muscle length
and the rate of change in length
golgi tendon organ - Answer proprioceptors located in tendons near myotendinous
junction and are in series attatched end to end with extrafusal muscle fibers, activated
when the tendon attached to an active muscle is stretched, inhibits muscle activation
sarcopenia - Answer reduced muscle size and strength as a result of aging or inactivity
systole - Answer ventricular contraction
diastole - Answer ventricular relaxation
sinoatrial SA node - Answer intrinsic pacemaker, where rhythmic electrical impulses are
normally initiated
,atrioventricular AV node - Answer where the impulse is slightly delayed before passing
to the ventricles
atrioventricular AV bundle - Answer conducts the impulse to the the left and right
bundle branches and Purkinje fibers to all parts of the ventricle
bradycardia - Answer fewer than 60 beats per minute
tachycardia - Answer more than 100 beats per minute
depolarization - Answer the reversal of the membrane electrical potential whereby the
normally negative potential inside the membrane becomes slightly positive and the
outside becomes slightly negative
muscles of expiration - Answer rectus abdominis, external and internal obliques,
transverse abdominis, internal intercostals
, pleural pressure - Answer pressure in the narrow space between the lung pleura adn the
chest wall pleura, normally slightly negative
alveolar pressure - Answer pressure inside the alveoli when the glottis is open and no air
is flowing into or out of the lungs, equal to atmospheric pressure
diffusion - Answer simple random motion of molecules moving in opposite directions
through the alveolar capillary membrane
bioenergetics - Answer the flow of energy in a bioogical system, the conversion of
macronutrients (chemical energy) into biologically usable forms of energy
energy - Answer the ability or capacity to perform work
metabolism - Answer the total of all the catabolic or exergonic and anabolic or
endergonic reactions in a biological system
law of mass action
mass action effect - Answer the concentrations of reactants or products in solution will
drive the direction of reactions
near-equilibrium reactions - Answer proceed in a direction dictated by the
concentrations of the reactants due to the law of mass action
metabolic acidosis - Answer exercise induced decreases in pH, may be responsible for
peripheral fatigue
Cori cycle - Answer the transportation of lactate in the blood to the liver to be converted
to glucose via gluconeogenesis
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