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CSCS Key Terms Question and answers verified to pass
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CSCS Key Terms Question and answers verified to pass A-band - correct answer Corresponds with the alignment of the myosin filaments; the area between two I-bands of a sarcomere, marked by partial overlapping of actin and myosin filaments and appearing dark Acetylcholine - correct answer A...

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  • November 28, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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CSCS Key Terms Question and answers
verified to pass
A-band - correct answer ✔Corresponds with the alignment of the myosin
filaments; the area between two I-bands of a sarcomere, marked by partial
overlapping of actin and myosin filaments and appearing dark


Acetylcholine - correct answer ✔A neurotransmitter that diffuses across the
neuromuscular junction, causing excitation of carcolemna. Once an efficient
amount is released, an action potential is generated across the sarcolemna,
and the fiber contracts.


Actin - correct answer ✔A type of myofilament; thin filaments (about 6 no in
diameter) consist of two strands arranged in a double helix


Action potential - correct answer ✔An electrical nerve impulse


All-or-none principle - correct answer ✔There is no such thing as a motor
neuron stimulus that causes only some of the fibers to contract. At the same
time, a stronger action potential cannot cause a stronger contraction. This can
be compared to firing a gun, once a sufficient amount of pressure is placed on
the trigger, the gun fires; however, squeezing the trigger harder will not cause
the bullet to go faster


Alveolar pressure - correct answer ✔Is the pressure inside the alveoli when
the glottis is open and no air is flowing into or out of the lungs; in this instance,
the pressure in all parts of the respiratory tree is the same al the way to the
alveoli and is equal to the atmospheric pressure; during expiration, alveolar
pressure must rise above atmospheric pressure


Alveoli - correct answer ✔Where gases are exchanged in respiration

, Aortic valve - correct answer ✔The aortic valve along with the pulmonary
valve make up the semilunar valves and prevent the flow of blood from the
ventricles back into the atria during ventricular contraction (systole)


Arterial system - correct answer ✔Carries blood flow away from the heart


Arteriole - correct answer ✔Small branches of arteries that act as control
vessels through which blood enters the capillaries; play a major role in the
regulation of blood flow to the capillaries


Artery - correct answer ✔The function of arteries is to rapidly transport blood
pumped from the heart; because blood pumped from the heart dis under
relatively high pressure, arteries must have string muscular walls


Atrioventricular bundle (AV) - correct answer ✔A specialized electrical
conduction system controls the mechanical contraction of the heart, part of
this system is made up of the atrioventricular BUNDLE which conducts the
impulse to the ventricles; (#3 in pic)


Atrioventricular node (AV) - correct answer ✔A specialized electrical
conduction system controls the mechanical contraction of the heart, part of
this system is made up of the atrioventricular NODE which is the location of
where the impulse is delayed slightly before passing into the ventricles


Atrioventricular valve (AV) - correct answer ✔is made up of the tricuspid
valve and mitral valve (also knows as bicuspid valve) and prevent the flow of
blood from the ventricles back into the atria during ventricular contraction (also
known as systole)

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