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Human Anatomy > Upper Limb Muscles > Flashcards

Upper Limb Muscles Flashcards

1
Q

Trapezius

Origin and insertion

A

Extends and abducts head, rotates and adducts scapula, fixes scapula
Origin: posterior occipital bone, Nuchal ligament, C7-T4
Insertion: clavicle, acromion, and spine of scapula

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2
Q

Deltoid

*

A

Abducts arm, flexes, extends medially and laterally rotates humerus
Origin: clavicle, acromion, spine of scapula
Insertion: deltoid tuberosity of humerus

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3
Q

Pectoralis major

*

A

Flexes, adducts, and medially rotates humerus
Origin: clavicle, sternum, cartilages of ribs 1-7
Insertion: crest of greater tubercle of humerus

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4
Q

Pectoralis minor

*

A

Depresses glenoid cavity
Origin: ribs 3-5
Insertion: coracoid process of scapula

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5
Q

Latissimus dorsi

A

Extends, adducts, and medially rotates humerus, draws shoulder inferiorly

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6
Q

Supraspinatus

*

A

Abducts arm, helps stabilize shoulder joint
Origin: supraspinous fossa
Insertion: greater tubercle of humerus

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7
Q

Infraspinatus

*

A

Laterally rotates arm, stabilizes shoulder joint
Origin: infraspinous fossa
Insertion: greater tubercle of humerus

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8
Q

Subscapularis

*

A

Medially rotates arm, stabilizes shoulder joint
Origin: subscapular fossa
Insertion: lesser tubercle of humerus

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9
Q

Teres minor

*

A

Laterally rotates and adducts humerus, stabilizes shoulder joint
Origin: lateral border of scapula
Insertion: greater tubercle of humerus

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10
Q

Teres major

*

A

Extends and medially rotates humerus
Origin: inferior angle of scapula
Insertion: crest of lesser tubercle of humerus

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11
Q

Biceps brachii

*

A

Flexes arm, flexes forearm, supinates forearm
Origin: superior margin of glenoid cavity, coracoid process of scapula
Insertion: radial tuberosity

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12
Q

Triceps brachii

*

A

Extends and adducts arm, extends forearm
Origin: infraglenoid tuberosity of scapula, lateral and posterior surface of humerus
Insertion: olecranon, tuberosity of ulna

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13
Q

Coracobrachialis

A

Flexes and medially rotates humerus

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14
Q

Brachialis

*

A

Flexes forearm
Origin: anterior, distal surface of humerus
Insertion: coronoid process of ulna

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15
Q

Brachioradialis

A

Flexes forearm

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16
Q

Supinator

*

A

Supinates forearm
Origin: lateral epicondyle of humerus
Insertion: proximal radius

17
Q

Pronator quadratus

*

A

Pronates forearm and hand
Origin: distal part of anterior ulna
Insertion: distal radius

18
Q

Pronator teres

*

A

Pronates and flexes forearm
Origin: medial epicondyle of humerus
Insertion: lateral, middle shaft of radius

19
Q

Palmaris longus

A

Anchors skin and fascia of palmar region

20
Q

Flexor carpi radialis

*

A

Flexes and abducts wrist
Origin: Medial epicondyle of humerus
Insertion: second and third metacarpals

21
Q

Flexor carpi ulnaris

*

A

Flexes and adducts wrist
Origin: medial epicondyle of humerus
Insertion: pisiform

22
Q

Flexor digitorum superficialis

A

Flexes proximal and middle phalanges, flexes wrist

23
Q

Flexor digitorum profundus

A

Flexes phalanges and flexes wrist

24
Q

Flexor pollicis longus

A

Flexes thumb

25
Q

Flexor pollicis brevis

A

Flexes thumb

26
Q

Abductor pollicis brevis

A

Abducts thumb

27
Q

Extensor carpi radialis longus

*

A

Extends and abducts wrist
Origin: lateral supracondylar ridge of humerus
Insertion: second metacarpal

28
Q

Extensor carpi radialis brevis

*

A

Extends and abducts wrist
Origin: lateral epicondyle of humeus
Insertion: third metacarpal

29
Q

Extensor carpi ulnaris

*

A

Extends and adducts wrist
Origin: lateral epicondyle of humerus
Insertion: fifth metacarpal

30
Q

Extensor digitorum

*

A

Extends phalanges, extends hand
Origin: lateral epicondyle of humerus
Insertion: middle and distal phalanges of second through fifth digits

31
Q

Abductor pollicis longus

A

Abducts thumb

32
Q

Extensor pollicis brevis and longus

A

Extends thumb

Human Anatomy (6 decks)

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