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Anatomy > Upper Extremity Muscles OIA > Flashcards

Upper Extremity Muscles OIA Flashcards

1
Q

Trapezius OIA

A

Origin: external occipital protuberance; C7-C12
Insertion: spine of scapula; acromian process; lateral of clavicle
Actions: elevates, depresses, retracts shoulder girdle

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2
Q

Latissimus Dorsi OIA

A

O: T7-L5; thoraco-lumbar fascia; iliac crest
I: intertubuclar groove of humerus
A: adducts, medially rotates, extends arm at shoulder girdle

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3
Q

Levator Scapulae (action)

A

O: –
I: –
A: elevates shoulder girdle/scapula

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4
Q

Rhomboideus major and minor (action)

A

A: retracts the shoulder girdle

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5
Q

Serratus anterior (action)

A

O: –
I: –
A: protracts shoulder girdle

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6
Q

Deltoid (anterior, middle, and posterior head) OIA

A

O: lateral clavicle (anterior); acromion process & spine of scapula; spine of scapula (posterior)
I: deltoid tuberosity
A: flexes, medially rotates, abducts, extends, and laterally rotates at shoulder joint

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7
Q

Supraspinatus OIA

A

O: supraspinous fossa
I: greater tubercle of humerus
A: abducts, stabilizes arm at shoulder joint

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8
Q

Infraspinatus OIA

A

O: infraspinous fossa
I: greater tubercle of humerus
A: laterally rotates, abducts, stabilizes arm at shoulder joint

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9
Q

Teres minor IA

A

O: –
I: greater tubercle of humerus
A: laterally rotates, abducts, and stabilizes arm at shoulder joint

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10
Q

Subscapularis OA

A

O: subscapular fossa
I: –
A: medially rotates; stabilizes arm at shoulder joint

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11
Q

Teres major (action)

A

O: –
I: –
A: adducts; medially rotates arm at shoulder girdle

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12
Q

Pectoralis major OIA

A

O: sternum and clavicle
I: intertubuclar groove of humerus
A: adducts and medially rotates the shoulder joint

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13
Q

Pectoralis minor OIA

A

O: ribs 3-5
I: coracoid process of scapula
A: protracts shoulder girdle, accessory muscle to inspiration

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14
Q

Biceps Brachii (long & short head) OIA

A

O: superglenoid tubercle of scapula (long); coracoid process (short)
I: radial tuberosity
A: supinates forearm at radioulnar joint; flexes forarm at elbow joint

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15
Q

Coracobrachialis OIA

A

O: coracoid process of scapula
I: medial aspect of humerus
A: adducts and flexes arm at shoulder joint

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16
Q

Brachialis (action)

A

O: –
I: –
A: flexes forearm at elbow joint

17
Q

Triceps Brachii (long, lateral, medial head) OIA

A

O: infraglenoid tubercle (long); posterior surface of humerus (lateral); posterior surface of humerus (medial)
I: olecranon process
A: extends forearm at elbow joint

18
Q

Brachioradialis (action)

A

O: –
I: –
A: flexes forearm at elbow joint

19
Q

Pronator teres OA

A

O: medial epicondyle of humerus
I: –
A: pronates forearm at radioulnar joint

20
Q

Flexor carpi radialis OA

A

O: medial epicondyle of the humerus
I: –
A: flexes hand at wrist

21
Q

Palmaris longus OA

A

O: Medial epicondyle of humerus
I: –
A: flexes hand at wrist

22
Q

Flexor digitorum superificialis and profundus OA

A

O: Medial epicondyle of humerus
I: –
A: flexes digits II-V

23
Q

Flexor pollicis longus OA

A

O: Medial epicondyle of humerus
I: –
A: flexes digit I/pollex

24
Q

Flexor carpi ulnaris OA

A

O: medial epicondyle of humerus
I: –
A: flexes hand at wrist

25
Q

Supinator (action)

A

O: –
I: –
A: supinates forearm at radioulnar joint

26
Q

Pronator quadratus (action)

A

O: –
I: –
A: pronates forearm at radioulnar joint

27
Q

Extensor carpi radialis longus OA

A

O: lateral epicondyle of humerus
I: –
A: extends hand at wrist

28
Q

Extensor carpi radialis brevis OA

A

O: lateral epicondyle of humerus
I: –
A: extends hand at wrist

29
Q

Abductor pollicis longus OA

A

O: lateral epicondyle of humerus
I: –
A: abduction of thumb

30
Q

Extensor pollicis brevis OA

A

O: lateral epicondyle of the humerus
I: –
A: extends the thumb/digit I

31
Q

Extensor indicis OA

A

O: lateral epicondyle of humerus
I: –
A: extends digit II

32
Q

Extensor digitorum OA

A

O: lateral epicondyle of the humerus
I: –
A: extends digits II-V

33
Q

Extensor digiti minimi OA

A

O: lateral epicondyle of the humerus
I: –
A: extends digit V

34
Q

Extensor carpi ulnaris OA

A

O: lateral epicondyle of the humerus
I: –
A: extends hand at wrist

35
Q

Thenar eminence (action)

A

O: –
I: –
A: flexes and abducts the thumb

Anatomy (2 decks)

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