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Anatomy Muscles > Upper extremity > Flashcards

Upper extremity Flashcards

1
Q

Biceps Brachii m

A

Origin: Short head - coracoid process
Long head - supraglenoid tubercle

Insertion: Radial tuberosity and bicipital aponeurosis

Innervation: Musculocutaneous n

Arterial: Brachial A.

Action: Flex forearm and supination

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2
Q

Brachialis m

A

Origin: Humerus

Insertion: Ulnar tuberosity/ coranoid process

Innervation: Musculocutaneous n

Arterial: Brachial A.

Action: Flex forearm

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3
Q

Coracobrachialis m

A

Origin: Coracoid process

Insertion: Humerus

Innervation: Musculocutaneous n

Arterial: Brachial A.

Action: Flex forearm

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4
Q

Arm flexor muscles

A

Biceps brachii
Brachialis
Coracobrachialis

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5
Q

Triceps brachii .

A

Origin: Long head - infraglenoid tubercle
Lateral head - posterior humerus
Medial head - posterior humerus

Insertion: Olecranon

Innervation: Radial n.

Arterial: Deep Brachial a.

Action: Extend forearm

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6
Q

Anconeus m.

A

Origin: Lateral epicondyle

Insertion: Olecranon and posterior proximal ulna

Innervation: Radial n.

Arterial: Deep brachial a.

Action: Extend forearm

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7
Q

Arm extensor muscles

A

Triceps brachii

Anconeus

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8
Q

Brachoradialis m.

A

Origin: Lateral supracondylar ridge

Insertion: Distal radius

Innervation: Radial n.

Arterial: Radial recurrent a.

Action: Flex forearm

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9
Q

Supinator m.

A

Origin: Lateral epicondyle and ulnar crest

Insertion: Proximal radius

Innervation: Deep branch of radial n.

Arterial: Radial recurrent a. and posterior interosseous a.

Action: Supination

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10
Q

Extensor carpi radialis longus m.

A

Origin: Larteral supracondylar ridge

Insertion: Base of 2nd metacarpal

Innervation: Radial n.

Arterial: Radial recurrent and Radial a.

Action: Extend and ABduct wrist

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11
Q

Extensor carpi radialis brevis m

A

Origin: Lateral epicondyle

Insertion: Base of 3rd metacarpal

Innervation: Radial n.

Arterial: Radial recurrent and radial artery

Action: Extend and ABduct wrist

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12
Q

Extensor carpi ulnaris m

A

Origin: Lateral epicondyle and posterior ulna

Insertion: Base of 5th metacarpal and pisiform

Innervation: Posterior interosseous n.

Arterial: Posterior interosseous a.

Action: Extend and ADduct wrist

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13
Q

Extensor Digitorum m

A

Origin: Lateral epicondyle (common extensor tendon)

Insertion: extension expansions of 4 fingers

Innervation: Posterior interosseous n

Arterial: Posterior interosseous a

Action: Extend fingers at wrist

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14
Q

Extensor digiti minimi m

A

Origin: Lateral epicondyle

Insertion: Extensor expansion of little finger

Innervation: Posterior interosseous n

Arterial: Posterior interosseus a

Action: Extend little finger

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15
Q

Extensor indicis m

A

Origin: Posterior ulna and interosseous membrane

Insertion: Extensor expansion of index finger

Innervation: Posterior interosseous n

Arterial: Posterior interosseous a

Action: Extend index finger

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16
Q

Abductor pollicis longus m

A

Origin: Posterior ulna, radius, and interosseous membrane

Insertion: Posterior base of thumb, metacarpal

Innervation: Posterior interosseous n

Arterial: posterior interosseous artery

Action: ABducts thumb

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17
Q

Extensor Pollicis brevis m

A

Origin: Posterior radius and interosseous membrane

Insertion: Base of thumb proximal phalanx

Innervation: Posterior interosseous n

Arterial: Posterior interosseous a

Action: Extend thumb

18
Q

Extensor pollicis longus m

A

Origin: Posterior ulna and interosseous membrane

Insertion: Base of distal phalanx

Innervation: Posterior interosseous n

Arterial: Posterior interosseous a

Action: Extend thumb

19
Q

Flexor carpi radialis m

A

Origin: medial epicondyle

Insertion: Proximal 2nd and 3rd metacarpal

Innervation: Median n

Arterial: Ulnar a

Action: Flex wrist and ABduction

20
Q

Flexor carpi ulnaris m

A

Origin: Medial epicondyle, olecranon and posterior ulna

Insertion: Proximal 5th metacarpal, pisiform, hook of hamate

Innervation: Ulnar n

Arterial: Ulnar a

Action: Flex wrist and ADduction

21
Q

Palmaris longus m

A

Origin: Medial epicondyle

Insertion: Palmar aponeurosis and distal flexor retinaculum

Innervation: Median n

Arterial: Ulnar a

Action: Flex wrist and tightening of palmar aponeurosis

22
Q

Pronator Teres m

A

Origin: Medial epicondyle and coronoid process of ulna

Insertion: Middle radius

Innervation: Median n

Arterial: Ulnar a and radial a

Action: Forearm pronation

23
Q

Flexor digitorum superficialis m

A

Origin: medial epicondyle, coronoid process of ulna and radius

Insertion: base of middle phalanges of 4 fingers

Innervation: Median n

Arterial: Ulnar a

Action: Flexion of wrist, metacarpal and phalanges

24
Q

Flexor digitorum profundus m

A

Origin: Ulnar and interosseous membrane

Insertion: Base of distal phalanges of 4 fingers

Innervation: Lateral - Anterior interosseous n (C8, T1)
Medial - Ulnar n (C7, 8, T1)

Arterial: Ulnar a

Action: Flexion of wrist and distal phalanges

25
Q

Flexor pollicis longus m

A

Origin: Radius and interosseous membrane

Insertion: Base of thumb on distal phalanx

Innervation: Anterior interosseous n (C8, T1)

Arterial: Anterior interosseous a

Action: Flex thumb

26
Q

Pronator quadratus m

A

Origin: Distal anterior ulna

Insertion: Distal anterior radius

Innervation: Anterior interosseous n (C8, T1)

Arterial: Anterior interosseous a

Action: Pronate forearm

27
Q

Common origin for many Flexors

A

Medial epicondyle

Exceptions: Flexor digitorum profundus m, Flexor pollicis longus m, and Pronator quadratus m

28
Q

Common origin for many Extensors

A

Lateral epicondyle

Exceptions: Brachioradialis m, Extensor carpis radialis longus m, Extensor indices m, Abductor pollicis longus m, Extensor pollicis longus and brevis m

29
Q

ABductor pollicis brevis m

A

Origin: Trapezium and transverse carpal ligament

Insertion: Thumb proximal phalanx

Innervation: Recurrent branch of median n (C8, T1)

Arterial: Palmar branch of radial a

Action: Thumb ABduction

30
Q

Opponens pollicis m

A

Origin: Trapezium, and transverse carpal ligament

Insertion: Thumb at metacarpal

Innervation: Reccurent branch of median n (C8, T1)

Arterial: Palmar branch of radial a

Action: Thumb opposition

31
Q

Flexor pollicis brevis m

A

Origin: Superficial head - Trapezium and Flexor retinaculum
Deep head - Trapezoid and capitate

Insertion: Base to thumb, proximal phalanx

Innervation: Superficial head - recurrent branch of median n. (C8, T1)
Deep head - Ulnar n (C8, T1)

Arterial: Palmar branch of radial a

Action: Flex thumb

32
Q

ABductor digiti minimi m

A

Origin: Pisiform

Insertion: Base of little finger

Innervation: Deep branch of ulnar n (C8, T1)

Arterial: Ulnar a

Action: ABduct pinky

33
Q

Palmaris brevis m

A

Origin: Palmar aponeurosis

Insertion: Medial palmar skin

Innervation: Ulnar n

Arterial: Ulnar a

Action: Protect ulnar a and n

34
Q

Thenar muscles

A

ABductor pollicis brevis m
Flexor pollicis brevis m
Opponens pollicis m

35
Q

Opponens digiti minimi m

A

Origin: Hook of hamate and flexor retinaculum

Insertion: Metacarpal of little finger

Innervation: Deep branch of ulnar n (C8, T1)

Arterial: Ulnar a

Action: Rotation of little finger

36
Q

Flexor digiti minimi m

A

Origin: Hook of hamate and flexor retinaculum

Insertion: Base of little finger

Innervation: Deep branch of ulnar n (C8, T1)

Arterial: Ulnar a

Action: Flex pinky

37
Q

Dorsal Interosseous m

A

Origin: Two heads from adjacent metacarpals

Insertion: Base of proximal phalanx and extension expansions for index, middle, and ring finger

Innervation: Deep branch of ulnar n (C8, T1)

Arterial: Metacarpal a

Action: ABduct fingers

38
Q

Palmar Interosseous m

A

Origin: 2nd, 4th, and 5th metacarpals

Insertion: Base of proximal phalanx and extension expansion for index, ring and little finger

Innervation: Deep branch of ulnar n (C8, T1)

Arterial: Metacarpal a

Action: ADduct fingers

39
Q

ADductor pollicis m

A

Origin: Oblique head - capitate and base of 2nd and 3rd metacarpal
Transverse head - proximal two thirds of 3rd metacarpal

Insertion: thumb proximal phalanx

Innervation: Deep branch of ulnar n (C8, T1)

Arterial: Deep palmar arch

Action: ADduct thumb

40
Q

Lumbricals m

A

Origin: Tendons of flexor digitorum profundus

Insertion: Lateral aspects of fingers extensor expansions

Innervation: Lateral 2 - median n
Median 2 - ulnar n

Arterial: Superficial palmar arch

Action: Finger flexion at MP and extension IP

Anatomy Muscles (2 decks)

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