NSCA – CPT Study Guide Questions with
100% Verified Correct Answers
Epimysium
a sheath of fibrous connective tissue surrounding the muscle that is continues with tendons at
the end of a muscle
Tendon
a special connective tissue that is attached to the bone periosteum; any contraction of the
muscle pulls on the tendon and, in turn, the bone.
Muscle fibers
long muscle cells that create mucles
Fasciculi
bundles or muscle fibers grouped under the epimysium
Periosteum
Tissue that surrounds the fasciculi as a whole and lies beneath the Epimysium
Endomysium
Tissue that surround each individual muscle fiber
Sarcolemma
Tissue that envelops muscle fibers
Myofibril
long tissue threads that contains the apparatus the contracts the muscle cells (found in striated
muscles)
,Myofilaments
filaments of myofibrils constructed from protein, two types are myosin and actin
cross-bridges
the globular head of a myosin molecule that projects from a myosin filament in muscle and in
the sliding filament hypothesis of muscle contraction is held to attach temporarily to an
adjacent actin filament and draw it into the A band of a sarcomere between the myosin
filaments
Sarcomere structure
Sliding filament model
Electrocardiogram (ECG)
Type I muscle fiber
Slow twitch, fatigue resistant, high capacity for aerobic energy supply but have limited
potential for rapid force development (low aerobic power & low actomysin myofibril ATPase
activity).
i.e postural muscles like neck and spine
Type II muscle fiber
Fast twitch, inefficient & fatiguable, low aerobic power, rapid force development, high
actomysin myofibril ATPase activity, and high anaerobic power
Type IIa and Type IIx muscle fiber difference
Type IIa fibers have greater capacity for aerobic metabolism and more capillaries
surrounding them, therefore have greater resistance to fatigue
, P wave
depolarization of the atria in response to sinoatrial (SA) node triggering, thus resulting in
atrial contraction
QRS complex
Depolarization of ventricles that triggers ventricular contraction, atrial repolarization occurs
as well
T wave
Ventricular repolarization
Actin
A contractile protein that is part of the thin filaments in muscle fibers
Myosin
The contractile protein that makes up the thick filaments of muscle fibers
Z line
Separates one sarcomere from the next and is where actin filaments attach
A band (dark)
corresponds to the alignment of the myosin filaments
I band (light)
corresponds with the areas in two adjacent sarcomeres that contain only actin filaments
H zone
the area in a sarcomere where only myosin filaments are present
100% Verified Correct Answers
Epimysium
a sheath of fibrous connective tissue surrounding the muscle that is continues with tendons at
the end of a muscle
Tendon
a special connective tissue that is attached to the bone periosteum; any contraction of the
muscle pulls on the tendon and, in turn, the bone.
Muscle fibers
long muscle cells that create mucles
Fasciculi
bundles or muscle fibers grouped under the epimysium
Periosteum
Tissue that surrounds the fasciculi as a whole and lies beneath the Epimysium
Endomysium
Tissue that surround each individual muscle fiber
Sarcolemma
Tissue that envelops muscle fibers
Myofibril
long tissue threads that contains the apparatus the contracts the muscle cells (found in striated
muscles)
,Myofilaments
filaments of myofibrils constructed from protein, two types are myosin and actin
cross-bridges
the globular head of a myosin molecule that projects from a myosin filament in muscle and in
the sliding filament hypothesis of muscle contraction is held to attach temporarily to an
adjacent actin filament and draw it into the A band of a sarcomere between the myosin
filaments
Sarcomere structure
Sliding filament model
Electrocardiogram (ECG)
Type I muscle fiber
Slow twitch, fatigue resistant, high capacity for aerobic energy supply but have limited
potential for rapid force development (low aerobic power & low actomysin myofibril ATPase
activity).
i.e postural muscles like neck and spine
Type II muscle fiber
Fast twitch, inefficient & fatiguable, low aerobic power, rapid force development, high
actomysin myofibril ATPase activity, and high anaerobic power
Type IIa and Type IIx muscle fiber difference
Type IIa fibers have greater capacity for aerobic metabolism and more capillaries
surrounding them, therefore have greater resistance to fatigue
, P wave
depolarization of the atria in response to sinoatrial (SA) node triggering, thus resulting in
atrial contraction
QRS complex
Depolarization of ventricles that triggers ventricular contraction, atrial repolarization occurs
as well
T wave
Ventricular repolarization
Actin
A contractile protein that is part of the thin filaments in muscle fibers
Myosin
The contractile protein that makes up the thick filaments of muscle fibers
Z line
Separates one sarcomere from the next and is where actin filaments attach
A band (dark)
corresponds to the alignment of the myosin filaments
I band (light)
corresponds with the areas in two adjacent sarcomeres that contain only actin filaments
H zone
the area in a sarcomere where only myosin filaments are present
