Muscles Lab - Body Movements

Question 1

Define origin

Answer 1

the immovable point of attachment

Question 2

Define insertion

Answer 2

the attachment on the bone that is movable during an action

Question 3

Define synergist. Give an example.

Answer 3

a muscle that aids an agonist in performing a movement

ex: brachioradialis is a synergist for the flexion at the elbow

Question 4

Define agonist. Give an example.

Answer 4

the muscle group that is primarily responsible for producing movement

ex: biceps brachii is an agonist for the flexion at the elbow

Question 5

Define antagonist. Give an example.

Answer 5

the muscle group that are located on the opposite side of the joint and reverse the movement of the agonist

ex: triceps brachii is an antagonist for the flexion at the elbow

Question 6

Define/describe flexion. Give example.

Answer 6

a movement that decreases the angle between two body parts

ex: biceps branchii muscle allows for flexion at the elbow

Question 7

Define/describe extension. Give example.

Answer 7

a movement that increases the angle between two body parts

ex: triceps branchii allows for extension at the elbow

Question 8

Define/describe elevation. Give example.

Answer 8

moving a body part up

ex: trapezius muscle allows to elevate scapula

Question 9

Define/describe depression. Give example.

Answer 9

moving a body part down

ex: trapezius muscle allows to depress scapula

Question 10

Define/describe protraction. Give example.

Answer 10

a movement that results in a portion of the body being moved forward along the transverse plane

Question 11

Define/describe retraction. Give example.

Answer 11

a movement that results in a portion of the body being moved backward along the transverse plane

Question 12

Define/describe medial (interior) rotation. Give example.

Answer 12

a rotational movement towards the midline

Question 13

Define/describe lateral rotation. Give example.

Answer 13

the external rotation of the limb away from the midline

Question 14

Define/describe abduction. Give example.

Answer 14

moving a limb away from the midline of your body in the frontal plane

Question 15

Define/describe adduction. Give example.

Answer 15

moving a limb toward the midline of your body in the frontal plane

Question 16

Define/describe supination. Give example.

Answer 16

the motion of turning the palm anteriorly

Question 17

Define/describe pronation. Give example.

Answer 17

the motion of turning the palm posteriorly

Question 18

Define/describe inversion. Give example.

Answer 18

turns the sole inward toward the midline of the body

Question 19

Define/describe eversion. Give example.

Answer 19

turns the sole outward, away from the midline

Question 20

Define/describe dorsiflexion. Give example.

Answer 20

when the ankle bends raising the toes upward

Question 21

Define/describe plantar flexion. Give example.

Answer 21

when the ankle bends in the direction that points the toes

Question 22

Define/describe opposition. Give example.

Answer 22

a small hand movement consisting of the thumb touching the tips of the other digits

Question 23

Define/describe reposition. Give example.

Answer 23

the thumb moves away from the tip of the other finger