Muscles of the upper and lower limbs 1

Question 1

Origin: Ribs 3-5
Action: Depress & protract scapula, elevate ribs

Answer 1

Pectoralis minor

Question 2

Origin: Ribs 1-9
Insertion: Anterior Scapula
Action: Protract & superiorly rotate scapula

Answer 2

Serratus Anterior (98)

Question 3

Action: Elevate & retract scapula
Notes: diamond shaped, behind scapula

Answer 3

Trapezius (95-97)

Question 4

Origin: C1-C4
Insertion: Superior scapula
Action: Elevate scapula

Answer 4

Levator scapulae

Question 5

Origin: C7-T1 vertebrae
Insertion: Medial Scapula
Action: retract scapula
Notes: Smaller of Rhomboid muscle

Answer 5

Rhomboid minor

Question 6

Origin: T2-T5 vertebrae
Insertion: Medial Scapula
Action: retract scapula
Notes: Larger of Rhomboid muscle

Answer 6

Rhomboid major

Question 7

Action: Adduct & flex shoulder
Insertion: humerus
Notes: Superficial

Answer 7

Pectoralis Major (100-102)

Question 8

Action: Adduct and extend shoulder
Notes: back muscle, behind humerus, extension of shoulder joint

Answer 8

Teres Major (92)

Question 9

Action: Adduct & extend shoulder
Insertion: behind humerus
Notes: broad muscle, along thoracic vertebrae

Answer 9

Latissimus dorsi ( 93)

Question 10

Origin: Clavicle, scapula
Insertion: Deltoid tuberosity
Action: Abduct shoulder
Notes: triangle muscle on shoulder, major shoulder abductor, pulls shoulder out

Answer 10

Deltoid (36)

Question 11

Origin: Lateral scapula
Insertion: Greater tubercle
Action: Laterally rotate shoulder
Notes: Small, in front of scapula

Answer 11

Teres minor (91)

Question 12

Origin: Lateral scapula
Insertion: Greater tubercle
Action: Abduct shoulder
Notes: (location) supraspinous fossa, rotate humerus laterally and medially

Answer 12

Supraspinatus

Question 13

Origin: Lateral scapula
Insertion: Greater tubercle
Action: Laterally rotate shoulder
Notes: Laterally extends shoulder joint

Answer 13

Infraspinatus (90)

Question 14

Origin: Anterior scapula
Insertion: Lesser tubercle
Action: Medially rotate shoulder
Notes: “fish fin”, broad muscle

Answer 14

Subscapularis

Question 15

Origin: (short) coracoid process, (long) scapula
Insertion: Radius
Action: Flex elbow
Notes: #11 on arm model, Thumb side

Answer 15

Biceps brachii (37, 38)

Question 16

Action: Flex shoulder
Notes: #15 on the arm model

Answer 16

Coracobrachialis

Question 17

Origin: Distal Humerus
Insertion: Ulna
Action: Flex elbow
Notes: #14 on arm model, prime mover of elbow flexion

Answer 17

Brachialis (39)

Question 18

Origin: (lat, med) humerus (long) scapula
Insertion: Olecranon
Action: Extend elbow
Notes: #16-18 on arm model, agonist

Answer 18

Triceps Brachii (40-41)

Question 19

Action: Pronation
Notes: #22 on arm model

Answer 19

Pronator teres (45)

Question 20

Action: Abduct & flex wrist
Notes: radial side, #23 on arm muscle

Answer 20

Flexor carpi radialis (46)

Question 21

Action: flex wrist
Notes: #24 on arm model

Answer 21

Palmaris longus (47)

Question 22

Action: Adduct & flex wrist
Notes: ulna side ,#25 on arm model

Answer 22

Flexor carpi ulnaris (49)

Question 23

Action: Flex fingers
Notes: #26 on arm model

Answer 23

Flexor digitorum superficialis (48)

Question 24

Action: Adduct & extend wrist
Notes: #32 on arm model

Answer 24

Extensor carpi ulnaris (52)

Question 25

Action: Extend elbow Notes: #33 on arm model

Answer 25

Anconeus (53)

Question 26

Action: Extend little finger (pinky)

Answer 26

Extensor digiti minimi (51)

Question 27

Origin: Lateral Humerus Insertion: Radius Action: Flex elbow Notes: #19 on arm model

Answer 27

Brachioradialis (42)

Question 28

Action: Abduct & extend wrist

Answer 28

Extensor carpi radialis longus (43)

Question 29

Action: Abduct & extend wrist Notes: #21 on arm model

Answer 29

Extensor carpi radialis brevis (44)

Question 30

Action: Extend fingers Notes: #30 on arm model

Answer 30

Extensor digitorum (50)

Question 31

Action: Flex fingers at metacarpophalangeal joints, extend interphalangeal joints Notes: In between metacarpals

Answer 31

Lumbricals

Question 32

Action: Adduct fingers at metacarpophalangeal joints Notes: palm side

Answer 32

Palmar interossei

Question 33

Action: Abduct fingers @ metacarpophalangeal joints Notes: back side of hand, "jazz hands"

Answer 33

Dorsal interossei

Question 34

Action: Flex and Adduct thumbs

Answer 34

Flexor pollicis brevis