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PSIO 201 Exam 3 Study exam 100 correct and graded A $14.49   Add to cart

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PSIO 201 Exam 3 Study exam 100 correct and graded A

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PSIO 201 Exam 3 Study exam (100% correct and graded A+) three types of muscle basic function of muscle functions of skeletal muscle voluntary contraction muscles pull or push? how do you predict the action of a muscle? origin insertion standard anatomical position movement how to name a m...

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  • March 26, 2024
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PSIO 201 Exam 3 Study exam (100% correct and
graded A+)

1). Three types of muscle

 Ans: skeletal
cardiac
smooth


2). Basic function of muscle

 Ans: generate tension


3). Functions of skeletal muscle

 Ans: locomotion
facial expression
posture and body position
regulation of body temperature


4). Voluntary contraction

 Ans: requires nervous system input

some skeletal muscles are automatic, but we have the ability to change their activity (ex:
diaphragm)


5). Muscles pull or push? how do you predict the action of a muscle?

 Ans: pull

predict the action of a muscle based on location


6). Origin

 Ans: the place where the muscle starts on a bone - stays stationary



Insertion


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, 7).
 Ans: the place where the muscle ends on a bone - moves toward the origin


8). Standard anatomical position movement

 Ans: everything is extended except feet


9). How to name a movement

 Ans: action + name of segment that moves

ex: flexion of the forearm


10). Types of body movements

 Ans: flexion/extension
abduction/adduction


11). Flexion/extension

 Ans: movement to reduce (flexion) or increase (extension) the angle between
articulating bones at a joint

typically occur along a sagittal plane (anterior/posterior)


12). Flexion/extension examples

 Ans: elbow joint
knee joint
hip joint
shoulder joint


13). Abduction/adduction

 Ans: movement away or toward the longitudinal axis (or midline)

typically occur along a frontal plane in reference to the midline of the body


14). Reverse muscle action (rma)




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,  Ans: when the insertion is anchored, the origin moves towards the insertion

ex: pull-ups


15). Classifying a muscles based on action

 Ans: agonist
antagonist
synergist (includes fixator)


16). Agonist

 Ans: muscle primarily responsible for the movement (aka prime mover)


17). Antagonist

 Ans: muscle which opposes the action of the agonist


18). Synergist

 Ans: assists the agonist in making the action more efficient


19). Fixator

 Ans: special synergists which help to prevent movement at the muscle origin


20). Classification of muscles based on action example: abduction of the arm

 Ans: agonist: deltoid
antagonist: latissimus dorsi
synergist: supraspinatus
fixator: trapezius


21). Leverage

 Ans: lever = rigid bar = bone

fulcrum = fixed point around which the rigid bar (bone) moves = joint


22). How do muscles apply to leverage?



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