PSIO 201 EXAM 3 2026 STUDY GUIDE COMPREHENSIVE QUESTIONS ANSWERS VERIFIED A+

PSIO 201 EXAM 3 2026 STUDY GUIDE
COMPREHENSIVE QUESTIONS
ANSWERS VERIFIED A+
◉ Functions of skeletal muscle.
Answer: Locomotion, facial expression, posture and body position,
regulation of body temperature


◉ How do muscles act on bones.
Answer: Pull on bones, do not push
We can predict the action of a muscle based on location


◉ Origin.
Answer: Place where the muscle starts on a bone
Stays stationary


◉ Insertion.
Answer: Place where a muscle ends on a bone
Moves towards the origin


◉ In standard anatomical position, everything is extended except for....
Answer: The feet


◉ Muscle action.

,Answer: The insertion moves towards the origin


◉ Reverse muscle action.
Answer: The insertion is anchored and the origin moves towards the
insertion
Example: pull-ups


◉ Agonist.
Answer: Muscle primarily responsible for the movement


◉ Antagonist.
Answer: Muscle which opposes the action of the agonist


◉ Synergist.
Answer: Assists the agonist in making the action more efficient


◉ Fixator.
Answer: Special synergists which help to prevent movement at muscle
origin


◉ Fulcrum.
Answer: The fixed point around which a bone moves (joint)


◉ First class lever.

, Answer: Fulcrum in the middle
When you lift head effort on neck, fulcrum on spine, load being front of
head


◉ Second class lever.
Answer: Load in the middle
Calf raise: effort on calf, load of leg, fulcrum on toes


◉ Third class lever.
Answer: effort in the middle
Bicep curl: fulcrum at elbow, effort at bicep, load in hand


◉ Covers groups of muscles.
Answer: Deep fascia


◉ Covers muscles.
Answer: epimysium


◉ Covers fascicles.
Answer: Perimysium


◉ Covers muscle fibers.
Answer: endomysium