NSCA-CSCS Exam Chapter 1
Cross-bridge - CORRECT ANSWER Globular heads that protrude away from the
myosin filament at regular intervals.
Depolarization - CORRECT ANSWER the reversal of the membrane electrical
potential, whereby the normally negative potential inside the membrane becomes
slig...
Cross-bridge - CORRECT ANSWER Globular heads that protrude away from the
myosin filament at regular intervals.
Depolarization - CORRECT 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
Diastole - CORRECT ANSWER Ventricular relaxation
Diffusion - CORRECT ANSWER a simple random motion of molecules moving in
opposite directions through the alveolar capillary membrane.
Distal - CORRECT ANSWER farther from the trunk
Electrocardiogram (ECG) - CORRECT ANSWER a graphic representation of the
electrical activity of the heart that can be recorded at the surface of the body
, Extrafusal Fibers - CORRECT ANSWER normal muscle fibers that the intrafusal
fibers run parallel with
Fasciculus - CORRECT ANSWER small bundle of muscle fibers
Fast-Twitch Fiber - CORRECT ANSWER Type II (a and b) muscle fibers. Used for
anaerobic exercise.
Golgi Tendon Organ (GTO) - CORRECT ANSWER Proprioceptors located in the
tendons near the myotendinous junction and are in series, that is, attached end to
end, with extrafusal muscle fibers. These are activated when the tendon attached
to an active muscle is stretched.
Heart - CORRECT ANSWER a muscular organ comprised of two interconnected
but seperate pumps.
Hemoglobin - CORRECT ANSWER the transport of oxygen is accomplished by this
iron-protein molecule carried by the red blood cells. Also has an important
additional role as an acid-base buffer, a regulator of hydrogen ion concentration,
which is crucial to the rates of chemical reactions in cells.
H-Zone - CORRECT ANSWER in middle of sarcomere, contains myosin
I-Band - CORRECT ANSWER at edges of the sarcomere, contains actin
Inferior - CORRECT ANSWER Closer to the feet
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