Upper Limb Muscle Attachments

Question 1

Subscapularis

Answer 1

FROM: subscapular fossa of scapula
TO: lesser tubercle of humerus
FUNCTION: medial rotation (arm) and stabilisation

Question 2

Supraspinatus

Answer 2

FROM: supraspinous fossa of scapula
TO: greater tubercle of humerus
FUNCTION: abduction (arm) and stabilisation

Question 3

Infraspinatus

Answer 3

FROM: infraspinous fossa of scapula
TO: greater tubercle of humerus
FUNCTION: lateral rotation, abduction (arm) and stabilisation

Question 4

Teres minor

Answer 4

FROM: superior lateral border of scapula
TO: greater tubercle of humerus
FUNCTION: lateral rotation, adduction (arm) and stabilisation

Question 5

Teres major

Answer 5

FROM: posterior inferior angle of scapula
TO: medial lip of intertubercular/bicipital groove
FUNCTION: medial rotation, adduction and extension (arm)

Question 6

Latissimus dorsi

Answer 6

FROM: spinous processes of T2-L5, lower ribs and iliac crest
TO: intertubercular/bicipital groove
FUNCTION: medial rotation, adduction and extension (arm)

Question 7

Pectoralis major

Answer 7

FROM: medial anterio-inferior clavicle and lateral anterior sternum
TO: lateral lip of intertubercular/bicipital groove
FUNCTION: medial rotation, adduction and flexion (arm)

Question 8

Deltoid

Answer 8

FROM: anterior lateral clavicle, lateral acromion of scapula and lower border of spine of scapula
TO: deltoid tuberosity of humerus
FUNCTION: Flexion, extension, rotation and abduction (arm)

Question 9

Brachialis

Answer 9

FROM: inferior anterior diaphysis of humerus
TO: coronoid process and tuberosity of ulna
FUNCTION: flexion (forearm)

Question 10

Triceps brachii

Answer 10

FROM: infraglenoid tubercle of scapula and posterior diaphysis (spiral groove) of humerus
TO: olecranon of ulna
FUNCTION: extension and adduction (forearm)

Question 11

Brachioradialis

Answer 11

FROM: lateral supracondylar ridge of humerus
TO: (superior to) styloid process of radius
FUNCTION: flexion (forearm)

Question 12

Supinator

Answer 12

FROM: lateral epicondyle of humerus and supinator crest of ulna
TO: lateral proximal diaphysis of radius
FUNCTION: supination of forearm

Question 13

Pronator teres

Answer 13

FROM: medial epicondyle of humerus and medial border of ulna
TO: pronator crest/tuberosity (lateral midshaft) of radius
FUNCTION: pronation and flexion (forearm)

Question 14

Pronator quadratus

Answer 14

FROM: distal anterio-medial diaphysis of ulna
TO: distal anterior radius
FUNCTION: pronation (hand and forearm)

Question 15

Extensor carpi ulnaris

Answer 15

FROM: notch on posterior distal end of ulna (lateral to styloid process) and lateral epicondyle of humerus
TO: 5th metacarpals
FUNCTION: hand extension

Question 16

Biceps brachii

Answer 16

FROM: supraglenoid tubercle and coracoid process of scapula
TO: radial tuberosity of radius
FUNCTION: flexion (forearm)

Question 17

Extensor muscle (not attachment)

Answer 17

Extensor groove on posterior radius