2024 NSCA CSCS Chapter 2 Study Guide With 100% Verified Answers
- Biomechanics
Answer: focuses on the mechanisms through which the musculoskeletal compnents
interact to create movement
- Origin
Answer: proximal attachment
- Proximal
Answer: toward the center of the body
- Insertion
Answer: distal attachment
- Distal
Answer: away from the center of the body
- Origin
Answer: stationary attachments
- fleshy attachments
Answer: found at the proximal end of a muscle, muscle fibers attached directly to the bone, wide area
- fibrous attachments
Answer: aka tendons
- fibrous attachments
Answer: blended into both the muscle sheaths and the connective tissue surrounding the bone, have additional fibers that extend into the bone itself, strong attachment
- agonist
Answer: aka prime mover
- agonist
Answer: muscle that most directly causes movement
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- antagonist
Answer: muscle that can slow down or stop movement
- antagonist
Answer: muscle that assits in joint stabilization and braking limb toward the end of a fast movement protecting ligaments
- synergist
Answer: muscle group that assits indirectly in movement; required to control body motion when the agonist is a muacle that crosses two joints
- synergist
Answer: muscle that is required to control body motion when the agonist of a
muscle crosses two joints
- first class lever
Answer: lever for which the muscle force and resistive force act on opposite sides of the fulcrum
- fulcrum
Answer: pivot point of a lever
- lever
Answer: ridgid or simiridgid body that when subjected to a force whose line of
action does not pass through its pivot point, exerts force on any object impeding its tendency to rotate
- mechanical advantage
Answer: ratio of the moment arm through which an applied force acts to that through which a resistive force acts ratio greater than 1.0
- mechanical advantage ratio 1.0
Answer: allows the applied force to be less than the resistive force to produce an equal amount of torque
- mechanical advantage ratio less than 1.0
Answer: indicates that one must apply greater muscle force than the amount of
resistive force present= disadvantage for muscle
- moment arm
Answer: aka force arm, lever arm, torque arm
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