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Anatomy > Origins & Insertions > Flashcards

Origins & Insertions Flashcards

1
Q

Pectoralis Major

A

Clavicular Head
O: Anterior surface of medial half of clavicle
I: Intertubercular sulcus of humerus

Sternocostal head:
O: anterior surface of sternum, superior 6 costal cartilages, aponeurosis of external oblique
I: Intertubercular sulcus of humerus

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2
Q

Pectoralis minor

A

O: 3rd and 5th ribs near costal cartilages
I: Medial border and superior surface of coracoid process of scapula

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3
Q

Serratus anterior

A

O: External surfaces of lateral parts of 1st-8th ribs
I: Anterior surface of medial border of scapula

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4
Q

Trapezius

A

O: Medial third of superior nuchal line; external occipital protuberance; nuchal ligment; spinous processes of C7-T12 vertebrae
I: Lateral third of clavicle; acromion and spine of scapula

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5
Q

Latissimus dorsi

A

O: Spinous processes of T7-T12; thoracolumbar fascia, iliac crest, inferior 3-4 ribs
I: Intertubercular sulcus of humerus

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6
Q

Levator scapulae

A

O: Transverse processes of C1-C4
I: Medial border of scapula (superior to root of scap spine)

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7
Q

Rhomboid major

A

O: Spinous processes of T2-T5
I: Medial border of scapula (from level of spine to inferior angle)

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8
Q

Deltoid

A

O: Lateral third of clavicle; acromion and spine of scapula
I: Deltoid tuberosity of the humerus

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9
Q

Supraspinatus

A

O: Supraspinous fossa of scapula
I: Greater tubercle of the humerus

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10
Q

Infraspinatus

A

O: Infraspinatus fossa of scapula
I: Greater tubercle of the humerus

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11
Q

Subscapularis

A

O: Subscapular fossa
I: Lesser tubercle of humerus

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12
Q

Teres major

A

O: Posterior surface of inferior angle of scapula
I: Greater tubercle of humerus

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13
Q

Biceps brachii

A

O: Short head: tip of coracoid process; Long head: supraglenoid tubercle of humerus
I: Tuberosity of radius and bicipital aponeurosis

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14
Q

Brachialis

A

O: Distal half of anterior surface of humerus
I: Coronoid process and tuberosity of ulna

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15
Q

Coracobrachialis

A

O: Tip of coracoid process
I: Middle third of lateral surface of the humerus

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16
Q

Triceps brachii

A

O: Long head: infraglenoid tubercle of scapula; Lateral head: posterior surface of humerus superior to radial groove; Medial head: posterior surface of humerus inferior to radial groove
I: Proximal end of olecranon of ulna and fascia of forearm

17
Q

Pronator teres

A

O: Ulnar head: coronoid process; Humeral head: common flexor origin
I: Middle convexity of lateral surface of radius

18
Q

Flexor carpi radialis (FCR)

A

O: Common flexor origin
I: Base of 2nd metacarpal

19
Q

Palmaris longus

A

O: Common flexor origin
I: Distal half of flexor retinaculum, apex of palmar aponeurosis

20
Q

Flexor carpi ulnaris (FCU)

A

O: Humeral head: common flexor origin; Ulnar head: olecranon and posterior border of ulna
I: Pisiform, hook of hamate, 5th metacarpal

21
Q

Extensor digitorum

A

O: Common extensor origin
I: Extensor expansions of medial 4 digits

22
Q

Extensor carpi ulnaris (ECU)

A

O: Common extensor origin and posterior border of ulna
I: Dorsal aspect of base of 5th metacarpal

23
Q

Extensor pollicis longus

A

O: Posterior surface of middle third of ulna and interosseus membrane
I: Dorsal aspect of base of distal phalanx of thumb

24
Q

Extensor indicis

A

O: Posterior surface of distal third of ulna and interosseus membrane
I: Extensor expansion of 2nd digit.

25
Q

Extensor carpi radialis longus

A

O: Lateral supra epicondylar ridge of humerus
I: Dorsal aspect of base of 2nd metacarpal

26
Q

Abductor pollicis brevis

A

O: Scaphoid and trapezium, flexor retinaculum
I: Base of proximal phalanx of the thumb

27
Q

Adductor pollicis

A

O: Transverse head: palmar surface of 3rd metacarpal; Oblique head: capitate bone, bases of 2nd and 3rd metacarpals
I: Base of proximal phalanx of thumb

28
Q

Flexor pollicis brevis

A

O: Scaphoid and trapezium, flexor retinaculum
I: Base of proximal phalanx of thumb

29
Q

Opponens pollicis

A

O: Scaphoid and trapezium, flexor retinaculum
I: Lateral side of 1st metacarpal

30
Q

Abductor digiti minimi

A

O: Pisiform (palmar surface)
I: Medial side of base of proximal phalanx of 5th digit

31
Q

Flexor digit minimi

A

O: Hook of hamate, flexor retinaculum
I: Medial side of base of proximal phalanx of 5th digit

32
Q

Lumbricals, 1st and 2nd

A

O: Lateral two tendons of flexor digitorum profundus
I: Lateral sides of extensor expansions of 2nd-5th digits

33
Q

Lumbricals, 3rd and 4th

A

O: Medial three tendons of flexor digitorum profundus
I: Lateral sides of extensor expansions of 2nd-5th digits

34
Q

Dorsal interossei, 1st-4th

A

O: Adjacent sides of two metacarpals
I: Bases of proximal phalanges, extensor expansions of 2nd-4th digits

35
Q

Palmar interossei, 1st-3rd

A

O: Palmar surfaces of 2nd, 4th, and 5th metacarpals
I: Bases of proximal phalanges, extensor expansions of 2nd, 4th, and 5th digits

Anatomy (4 decks)

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