Muscle Movements, Roles, and Names

Question 1

Five Golden Rules

Answer 1

1. With a few exceptions, all skeletal muscles cross at one joint.
2. Typically, the bulk of a skeletal muscle lies proximal to the joint crossed
3. All skeletal muscles have at least 2 attachments: The origin and the insertion
4. Skeletal muscles can only PULL; never push
5. During contraction, a skeletal muscle insertion moves towards the origin

Question 2

Muscle Origin

Answer 2

The point where the muscle attaches to a bone or structure

Question 3

Muscle Insertion

Answer 3

Attachment on the bone or structure that moves when the muscle contracts

Question 4

Relationship between origin and insertion

Answer 4

The muscle origin is the anchor point, whilke the insertion is where movement happens during muscle contraction

Question 5

Flexion

Answer 5

Brings 2 bones together by bending a joint

Question 6

Extension

Answer 6

Straightens a joint and move body parts away from each other

Question 7

Hyperextention

Answer 7

Angle between 2 body parts increases past typical anatomical position

Question 8

Rotation

Answer 8

Twisting/turning without bending

Question 9

Abduction

Answer 9

Moving a body part away from the midline of the body

Question 10

Adduction

Answer 10

Moving a body part towards the midline of the body

Question 11

Circumduction

Answer 11

Circular movement of a limb that can involve a combination of flexion, extension, adduction, and abduction

Question 12

Dorisflexion

Answer 12

Movement of raising your foot toward the shin
Ex.) Pulling towards up to body

Question 13

Planter Flexion

Answer 13

Movement pointing the toes downward away from the shin.
Ex.) Tip toes

Question 15

Inversion

Answer 15

Movement of foot that involves turning the sole inward.

Question 16

Eversion

Answer 16

Movement of the foot involving turning the sole outward

Question 17

Supination

Answer 17

Movement that involves rotating the forearm or foot so the palm or sole faces upward/forward

Question 18

Pronation

Answer 18

Rotating the forearm or foot so the palm or sole faces downwards/backwards

Question 19

Opposition

Answer 19

Movement bringing the thumb acorss the palm to touch finger tips

Question 20

Protraction

Answer 20

Movement involving moving the body part forward and away from the midlineof the body
Ex.) Moving shoulders forward

Question 21

Retraction

Answer 21

MOvement involving moving the body part backwards and away frm the body
Ex.) Moving shoulder backward

Question 22

Elevation

Answer 22

Raising a body part upward
Ex.) Shrugging shoulders

Question 23

Depression

Answer 23

Lowering a body part downward
Ex.) Shocked face involves moving jaw downward