Muscles of Shoulder, Arm, and hand

Question 1

Origin

Answer 1

Site of muscle attachment that does NOT move

Question 2

Insertion

Answer 2

Site of muscle attachment that DOES move

Question 3

Trapezius

Answer 3

Origin- Occipital bone, C7 - T12
Insertion- Clavicle, acromion process, scapular spine
Action- extend/abduct head, rotate/adduct scapula

Question 4

Deltoid

Answer 4

Origin- Clavicle, acromion process, scapular spine
Insertion- deltoid tuberosity of humerous
Action- abducts arm, medially/laterally rotates arm

Question 5

Pectoralis Major

Answer 5

Origin- Clavicle, sternum, ribs 1-7
Insertion- Crest of greater tuberacle of humerous
Action- Flexion, adduction, medial rotation of arm

Question 6

Latissimus Dorsi

Answer 6

Origin- T7 - S5, illium crest, ribs 10-12
Insertion- Intertubercular groove of humerous
Action- Extends, adducts, medially rotates arm

Question 7

Biceps Brachii

Answer 7

Origin- 
       Long Head - Superior glenoid fossa
       Short Head - Coracoid Process
Insertion- Radial tuberosity 
Action-  arm/forearm flexion, supination

Question 8

Triceps Brachii

Answer 8

Origin-
Long Head - Infraglenoid tuberosity of scapula
Short Head - lateral and posterior surface of humerus
Insertion- Olecranon process, tuberosity of ulna
Action- extends/adducts arm, extends forearm

Question 9

Name the 4 muscles of the Rotator Cuff

Answer 9

Supraspinatus, infraspinatus, teres minor, subscarpularis

Question 10

Prime Mover

Answer 10

Primary muscle responsible for movement

Question 11

Synergist

Answer 11

muscles that assist the prime mover

Question 12

Antagonist

Answer 12

Muscles that oppose the prime mover

Question 13

Fixator

Answer 13

Prevents movement of bone that the prime mover is attached to

Question 14

Intrinsic Muscle

Answer 14

Contained within region of movement

Question 15

Extrinsic Muscle

Answer 15

Found outside region of movement responsible for

Question 16

Pectoralis Minor

Answer 16

Depresses glenoid cavity, raises ribs 3-5

Question 17

Supraspinatus

Answer 17

Abducts arm, stabilizes shoulder

Question 18

Infraspinatus

Answer 18

Laterally rotates arm, stabilizes shoulder

Question 19

Teres Major

Answer 19

medially rotates arm, stabilizes shoulder

Question 20

Teres Minor

Answer 20

Laterally rotates, stabilizes shoulder

Question 21

Subscapularis

Answer 21

Medially Rotates Arm, stabilizes shoulder

Question 22

Brachioradialis

Answer 22

flex forearm

Question 23

Coracobrachialis

Answer 23

adduction arm

Question 24

Brachialis

Answer 24

forearm flexion

Question 25

Supinator

Answer 25

Origin- lateral epicondyle humerus, Insertion- proximal radius Action- supinates hand

Question 26

Pronator Teres

Answer 26

Origin- medial epicondyle of humerus, coronoid process of ulna Insertion- lateral, middle shaft of radius Action- pronates hand, flex forearm

Question 27

Pronator Quadratus

Answer 27

pronates hand

Question 28

flexor carpi radialis

Answer 28

flexes, abducts hand

Question 29

flexor carpi ulnaris

Answer 29

flexes, adducts hand

Question 30

palmaris longus

Answer 30

Origin- medial epicondyle of humerus Insertion- palmar aponeurosis Action- flexes hand

Question 31

flexor digitum superficialis

Answer 31

Origin-medial epicondyle of humerus, proximal ulna & radius Insertion- middle phalanges (2-5) Action- flexes middle & proximal phalanges, flexes hand

Question 32

flexor digitum profundus

Answer 32

flexes phalanges and hand

Question 33

flexor pollicis longus

Answer 33

flexes thumb

Question 34

Flexor pollicis brevis

Answer 34

Flex thumb

Question 35

Abductor pollicis brevis

Answer 35

Abduct thumb

Question 36

Opponens pollicis

Answer 36

Origin- trapezium Insertion- 1st metacarpel Action- opposes thumb

Question 37

Extensor carpi radialis longus

Answer 37

extends & abducts hand

Question 38

Extensor carpi radialis brevis

Answer 38

extends & abducts hand

Question 39

Extensor carpi ulnars

Answer 39

extends & adducts hand

Question 40

Extensor digitorum

Answer 40

O- lateral epicondyle of humerous I- midal and distal phalanges 2-5 A- extends phalanges & extends hand

Question 41

Abductor pollicis longus

Answer 41

abducts thumb

Question 42

Extensor pollicis longus

Answer 42

extends thumb

Question 43

Extensor pollicis brevis

Answer 43

extends thumb