Muscle Actions Flashcards Preview

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Flashcards in Muscle Actions Deck (57)
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1

Extensor Carpi Radialis Brevis

Extends wrist, radially deviates wrist (abduction)

2

Extensor Carpi Ulnaris

Extends wrist, ulnar deviates wrist (adduction)

3

Flexor Carpi Ulnaris

Flexes wrist, ulnar deviates wrist (adduction)

4

Flexor Carpi Radialis

Flexes wrist, radially deviates wrist (abduction)

5

Extensor Digitorum

Extends digits of hand and wrist

6

Flexor Digitorum

Flexes digits of hand and wrist

7

Brachialis

Flexes elbow (as in raising forearm)

8

Pronator Teres

Pronates forearm at elbow (as in twisting forearm toward body)

9

Biceps Brachii

Flexes elbow, supinates forearm

10

Triceps Brachii

Extends forearm at elbow (long head also stabilizes shoulder)

11

Subscapularis

Medially rotates humerus at shoulder and stabilizes shoulder

12

Supraspinatus

Abducts arm at shoulder and stabilizes shoulder

13

Infraspinatus

Laterally rotates humerus at shoulder and stabilizes shoulder

14

Teres Minor

Adducts and laterally rotates humerus at shoulder and stabilizes shoulder

15

Deltoid (Anterior)

Flexion and medial rotation of humerus at shoulder

16

Deltoid (Middle)

Abducts humerus at shoulder (as in upward flap)

17

Deltoid (Posterior)

Extension and lateral rotation of humerus

18

Pectoralis Major

Flexion, adduction, medial rotation of humerus at shoulder (as in bench press)

19

Latissimus Dorsi

Extension, adduction, medial rotation of humerus at shoulder

20

Levator Scapula

Elevates, adducts (retracts) scapula (as in bring shoulder to ear)

21

Rhomboideus Major

Adducts (retracts) scapula (as in pulling shoulders back and up)

22

Serratus Anterior

Abducts scapula (to raise arm and pull shoulder forward, as in punching)

23

Trapezius (Upper)

Elevates scapula (as in shrugging)

24

Trapezius (Middle)

Retracts and elevates scapula (as in pulling shoulders back and up)

25

Trapezius (Lower)

Retracts and depresses scapula (as in pulling shoulders back and down)

26

Zygomatic Major

Draws angle mouth up (as in a smile)

27

Frontalis

Raise eyebrow, wrinkle forehead

28

Orbicularis Oris

Squeezes closed and protrudes lips (as in kissing)

29

Buccinator

Compresses cheek (as in sucking)

30

Orbicularis Oculi

Squeezes eyes closed (as in squinting)