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A&P Lab > Lab 6 > Flashcards

Lab 6 Flashcards

1
Q

Supraspinatus

A

Origin: Supraspinous fossa of scapula
Insertion: Greater tubercle of humerus
Action: Initiates abduction of arm
(Rotator Cuff)

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2
Q

Infraspinatus

A

Origin: Infraspinous fossa of scapula
Insertion: Greater tubercle of humerus
Action: Lateral rotation of arm
(Rotator Cuff)

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3
Q

Teres Minor

A

Origin: Lateral margin of posterior scapula
Insertion: Greater tubercle of humerus
Action: Lateral rotation of arm
(Rotator cuff)

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4
Q

Subscapularis

A

Origin: Subscapular fossa
Insertion: Lesser tubercle of the hummerus
Action: Medially rotates the head of humerus
(Rotator cuff)

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5
Q

Teres Major

A

Origin: Posterior surface of inferior angle of scapula
Insertion: Intertubercular sulcus of humerus
Action: Extends, medially rotates, and adducts arm

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6
Q

Deltoid

A

Origin: Lateral third of clavicle, acromion and spine of scapula
Insertion: Deltoid tuberosity of humerus
Action: Acting as a whole, prime mover of arm abduction

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7
Q

Coracobrachialis

A

Origin: Coracoid process of the scapula
Insertion: Medial surface and border of the body of the humerus
Action: Flexion, adduction of arm at shoulder joint, assist in retaining the head of the humerus in contact with glenoid cavity

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8
Q

Triceps Brachii

A

Origin: Long head- inferior margin of glenoid cavity, lateral head- posterior humerus, Medial head- distal radial groove on posterior humerus
Insertion: Olecranon of ulna
Action: Powerful forearm extensor

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9
Q

Aconeus

A

Origin: Lateral epicondyle of humerus
Insertion: Lateral aspect of olecranon of ulna
Action: Abducts ulna during forearm pronation

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10
Q

Biceps Brachii

A

Origin: Short head- coracoid process, long head-supraglenoid tubercle and lip of glenoid cavity
Insertion: Radial tuberosity
Action: Flexion (powerful) and supination of forearm

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11
Q

Brachialis

A

Origin: Distal portion of anterior humerus
Insertion: Coronoid process of ulna
Action: flexor of forearm

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12
Q

Brachioradialis

A

Origin: Lateral ridge at distal end of humerus
Insertion: Base of radial styloid process
Action: Synergist in forearm flexion

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13
Q

Pronator Teres

A

Origin: Medial epicondyle of humerus and coronoid process of ulna
Insertion: Midshaft of radius
Action: Pronate forearm

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14
Q

Pronator Quadratus

A

Origin: Distal portion of anterior ulnar surface
Insertion: Anterior surface of radius, distal end
Action: Pronates forearm

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15
Q

Supinator

A

Origin: Lateral epicondyle of humerus, proximal ulna
Insertion: Proximal end of radius
Action: Synergist of biceps brachii to supinate forearm

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16
Q

Flexor Carpi radialis

A

Origin: Medial epicondyle of humerus
Insertion: Base of metacarpal 2 and 3
Action: Powerful flexor and abductor of hand

17
Q

Palmaris Longus

A

Origin: Medial epicondyle of humerus
Insertion: Palmar aponeurosis, skin and fascia of palm
Action: tenses skin and fascia of palm

18
Q

Flexor carpi ulnaris

A

Origin: Medial epicondyle of humerus and olecranon and posterior surface of ulna
Insertion: Base of metacarpal 5, pisiform and hamate bones
Action: Flexes and adducts hands

19
Q

Flexor digitorum superficialis

A

Origin: Medial epicondyle of humerus, coronoid process of ulna, and shaft of radius
Insertion: Middle phalanges of fingers 2-5
Action: Flexes hand and middle phalanges of fingers 2-5

20
Q

Flexor digitorum profundus

A

Origin: Anteriomedial surface of ulna, interosseous membrane and coronoid process
Insertion: Distal phalanges of fingers 2-5
Action: flexes distal phalanges

21
Q

Extensor Carpi radialis brevis

A

Origin: Lateral epicondyle of humerus
Insertion: Base of metacarpal 3
Action: Extends and abducts hand, steadies wrist during finger flexion

22
Q

Extensor digitorum

A

Origin: Lateral epicondyle of humerus
Insertion: by 4 tendons into distal phalanges of fingers 2-5
Action: Prime mover of finger extension, extends hand and can flare fingers

23
Q

Extensor carpi radialis longus

A

Origin: lateral supercondylar ridge of humerus
Insertion: Base of metacarpal 2
Action: Extends and abducts hand

24
Q

Extensor carpi Ulnaris

A

Origin: Lateral epicondyle of humerus, posterior border of the ulna
Insertion: Base of metacarpal V
Action: Extends and adducts hand

25
Q

Flexor pollicis Longus

A

Origin: Anterior surface of radius, interosseous membrane
Insertion:
Action: Flexes thumb

26
Q

Extensor pollicis longus and berevis

A

Origin: Dorsal shaft of ulna and radius; interosseous membrane
Insertion: Base of distal phalanx of thumb (longus) and proximal phalanx of thumb (brevis)
Action: Extend thumb

27
Q

Abductor pollicis longus

A

Origin: Posterior surface of radius and ulna, interosseous membrane
Insertion: Metacarpal 1 and trapezium
Action: Abducts and extends thumb

28
Q

Thenar

A

Origin: Tubercles of scaphoid and trapezium
Insertion: Within the carpals and metacarpals of hand
Action: produce movement of thumb

A&P Lab (8 decks)

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