Key Terms Muscles

Question 1

Agonist

Answer 1

Muscle that is responsible for an action

Question 2

Synergist

Answer 2

Performs SAME action around the same joints.

Question 3

Antagonist

Answer 3

Performs OPPOSITE action around Same Joint

Question 4

Flexion

Answer 4

DECREASING the angle between 2 parts.

Question 5

Ex. Of Flexion

Answer 5

Dorsiflexion: foot flexed upward
Plantar Flexion: toes are flexed, movement of sole downward.

Question 6

Extension

Answer 6

INCREASING the angle between 2 body parts.

Question 7

Abduction

Answer 7

Movement of one limb AWAY from midline.
Key word: abduct… (take away)

Question 8

Adduction

Answer 8

Movement of limb TOWARD midline
Keyword: Add…(add more to midline)

Question 9

Rotation

Answer 9

Movement of limb around its longitudinal axis without lateral displacement.

Question 10

Circumduction

Answer 10

Circular motion around a joint.

Question 11

Supination

Answer 11

Turning the palm UPWARD.

Question 12

Pronation

Answer 12

Turning the palm DOWNWARD.

Question 13

Inversion

Answer 13

Turning sole of foot inward or toward the midline.

Question 14

Eversion

Answer 14

Turning sole of the foot outward away from midline.

Question 15

Protraction

Answer 15

Pulling a body part FORWARD.

Question 16

Retraction

Answer 16

Pulling a body part BACKWARD

Question 17

Elevation

Answer 17

Pulling a body part upward.

Question 18

Depression

Answer 18

Pulling a body part downward.

Question 19

Sphincter action

Answer 19

Closure of a round opening.