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DPT 744L > Muscles of the Arm and Forearm > Flashcards

Muscles of the Arm and Forearm Flashcards

1
Q

Triceps brachii

A

Long head:
-Infragleniod tubercle on scapula
Medial/Lateral head:
-Posterior surface of humerus

-Olecranon

  • Ext. of forearm at elbow joint
  • Long head: Ext. of humerus at shoulder joint.

-Radial n. (C6-C8)

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2
Q

Flexor Carpi Ulnaris

A
  • Medial epicondyle
  • olecranon
  • posterior ulna
  • Pisiform
  • Hamate
  • Base of 5th MC
  • Flex./Add. of wrist
  • Ulnar n. (C7-T1)
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3
Q

Pronator teres

A
  • medial epicondyle
  • supraepicondylar ridge
  • medial side of coronoid process
  • Mid-shaft of humerus
  • Pronation
  • Median n. (C6, C7)
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4
Q

Flexor Carpi Radialis

A
  • Medial epicondyle
  • Base of MCs 2-3
  • Flex./Abd. of wrist
  • Median n. (C6-C7)
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5
Q

Palmaris Longus

A
  • Medial epicondyle
  • Palmar aponeurosis of hand
  • Flexes wrist
  • Resist sheering force when gripping

-Median n. (C7, C8)

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6
Q

Flexor Digitorum Superficialis

A
  • Medial epicondyle
  • coronoid process
  • oblique line of radius

-MPs of fingers 2-5

  • Flexion of PIP and MCP of fingers 2-5
  • Flexion of wrist

-Median n. (C8, T1)

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7
Q

Flexor digitorum profundus

A
  • Ulna
  • Interosseous membrane

-DPs of fingers 2-5

  • Flexion of DIP and MCP of fingers 2-5
  • Flexion of wrist
  • Lateral half: median n. (anterior interossesous n.)
  • Medial half: Ulnar n. (C8, T1)
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8
Q

Flexor pollicis longus

A
  • Radius
  • Interosseous membrane
  • Base of distal phalanx of thumb
  • Flexion of IP and MCP joint of thumb
  • Median n. (anterior interosseous n.) (C7,C8)
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9
Q

Pronator quadratus

A
  • linear ridge on distal anterior surface of ulna
  • distal anterior surface of radius
  • Pronation
  • Median n. (anterior interosseous n.) (C7,C8)
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10
Q

Brachioradialis

A
  • Proximal part of lateral supraepicondylar ridge of humerus
  • Lateral surface of distal end of radius
  • Accessory flexor of elbow joint when forearm is midpronated
  • Radial n. [C5,C6]
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11
Q

Extensor carpi radialis longus

A
  • Proximal part of lateral supraepicondylar ridge of humerus
  • Dorsal surface of base of 2nd MC
  • Extension and abduction of the wrist
  • Radial n. [C6,C7]
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12
Q

Extensor carpi radialis brevis

A
  • Lateral epicondyle of the humerus
  • Dorsal surface of base of 2nd and 3rd MCs
  • Extension and abduction of the wrist
  • Deep branch of radial n. [C7,C8]
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13
Q

Extensor digitorum

A
  • Lateral epicondyle of the humerus
  • Four tendons, which insert via ‘extensor hoods’ into the dorsal aspects digits 2-4
  • Extension of digits 2-4 and wrist
  • Posterior interosseous n. [C7,C8]
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14
Q

Extensor digiti minimi

A
  • Lateral epicondyle of the humerus
  • Extensor hood of the LF
  • Extension of 5th digit
  • Posterior interosseous n. [C7,C8]
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15
Q

Extensor carpi ulnaris

A
  • Lateral epicondyle of humerus and ulna
  • Base of 5th MC
  • Extension and adduction of wrist
  • Posterior interosseous n. [C7,C8]
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16
Q

Supinator

A
  • Lateral epicondyle of humerus
  • Supinator crest of ulna
  • Lateral surface of radius
  • Supination
  • Posterior interosseous n. [C6,C7]
17
Q

Abductor pollicis longus

A
  • Ulna
  • radius
  • interosseous membrane
  • Base of 1st MC
  • Abduction of CMC joint of thumb
  • Posterior interosseous n. [C7,C8]
18
Q

Extensor pollicis brevis

A
  • Radius
  • interosseous membrane

• Base of proximal phalanx of the thumb

  • Extension of MCP and
  • CMC joints of the thumb

• Posterior interosseous n. [C7,C8]

19
Q

Extensor pollicis longus

A
  • Posterior surface of ulna
  • interosseous membrane
  • Base of distal phalanx of thumb
  • Extension of IP, CMC, and MCP joints of thumb
  • Posterior interosseous n. [C7,C8]
20
Q

Extensor indicis

A
  • Posterior surface of ulna
  • interosseous membrane
  • Extensor hood of index finger
  • Extension of index finger
  • Posterior interosseous n. [C7,C8]
21
Q

Anconeus

A
  • Lateral epicondyle of the humerus
  • Olecranon

• Elbow stabilization
• Accessory extensor of elbow
joint

• Radial n. [C6 to C8]

DPT 744L (5 decks)

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