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Anatomy > Upper limb - Forearm muscles (MSK) > Flashcards

Upper limb - Forearm muscles (MSK) Flashcards

1
Q

Anterior compartment

A
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2
Q

Pronator teres

Origin, insertion, innervation, action

A
  • Medial epicondyle
  • Radius (posterior side)
  • Median nerve
  • Pronates
  • Superficial
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3
Q

Flexor carpi radialis

Origin, insertion, innervation, action

A
  • Medial epicondyle
  • Base of the 2nd metacarpal
  • Median nerve
  • Flexor of the first at radial side and helps to abduct
  • Superficial
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4
Q

Palmaris longus

Origin, insertion, innervation, action

A
  • Medial epicondyle
  • Flexor retinaculum and palmar aponeurosis
  • Median nerve
  • Flexor of the wrist the long one and helps contract palmar aponeurosis (grip)
  • Superficial
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5
Q

Flexor carpi ulnaris

Origin, insertion, innervation, action

A
  • medial epicondyle
  • Base of 5th metacarpal
  • Ulnar nerve
  • Flexor of the wrist at the ulnar side and helps to adduct
  • Superficial
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6
Q

Flexor digitorum superficialis

Origin, insertion, innervation, action

A
  • Medial epicondyle
  • Middle phalanx (digits 2-5)
  • median nerve
  • Flexes wrist and PIJ of finger
  • Intermediate
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7
Q

Flexor digitorum profundus

Origin, insertion, innervation, action

A
  • Interosseous membrane
  • Distal phalanx 2-5
  • Flexes wrist and digits distally
  • Lateral half median nerve and medial half ulnar nerve
  • Deep
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8
Q

Flexor pollicis longus

Origin, insertion, innervation, action

A
  • Interosseous membrane
  • Distal phalanx of thumb
  • Median nerve
  • Flexes wrist and thumb joint
  • Deep
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9
Q

Pronator quadratus

Origin, insertion, innervation, action

A
  • Radius
  • Ulna
  • Median nerve
  • Pronates forearm
  • Deep
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10
Q

Posterior compartment

A
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11
Q

Brachioradialis (brachium to radius)

Origin, insertion, innervation, action

A
  • Lateral supracondylar ridge of humerus
  • Styloid process of distal radius
  • Radial nerve
  • Forearm flexion
  • Superficial
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12
Q

Extensor carpi radialis longus

Origin, insertion, innervation, action

A
  • Lateral supracondylar ridge of humerus
  • Base of 2nd metacarpal (posterior)
  • Radial nerve
  • Extension and abduction of the wrist
  • Extensor of the wrist and the radial side, the long one
  • Superficial
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13
Q

Extensor carpi radialis brevis

Origin, insertion, innervation, action

A
  • Lateral epicondyle
  • Base of 3rd metacarpal (posterior)
  • Radial nerve
  • Extension and abduction of the wrist
  • Extensor of the wrist at the radial side, the short one
  • Superficial
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14
Q

Extensor digitorum

Origin, insertion, innervation, action

A
  • Lateral epicondyle
  • Extensor expansion hood digits 2-5 (posterior)
  • Radial nerve
  • Extends the digits
  • Extensor of the digits (2-5)
  • Superficial
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15
Q

Extensor digiti minimi

Origin, insertion, innervation, action

A
  • Lateral epicondyle
  • IPJ of pinky
  • Radial nerve
  • Extends pinky
  • Superficial
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16
Q

Extensor carpi ulnaris

Origin, insertion, innervation, action

A
  • lateral epicondyle
  • Base of metacarpal 5
  • Wrist extension and adduction
  • Radial nerve
  • Superficial
17
Q

Supinator

- Origin, insertion, innervation, action

A

Lateral epicondyle/interosseous membrane

  • Proximal 3rd of radius
  • Radial nerve
  • Supinates forearm
  • Deep
18
Q

Abductor pollicis longus

Origin, Insertion, innervation, action

A
  • Interosseous membrane of radius and ulna
  • Base of metacarpal 1 (Trapezius bone)
  • Radial nerve
  • Thumb abductor
  • Deep
19
Q

Extensor pollicis longus

Origin, insertion, innervation, action

A
  • Interosseous membrane of radius and ulna
  • Distal phalanx of thumb (posterior)
  • Radial nerve
  • Extends thumb
  • Deep
20
Q

Extensor pollicis brevis

Origin, insertion, innervation, action

A
  • Interosseous membrane of radius and ulna
  • Proximal phalanx of thumb (posterior)
  • Radial nerve
  • Extends the thumb
  • Deep
21
Q

Extensor indicies

Origin, insertion, innervation, action

A
  • interosseous membrane
  • Extensor expansion of index finger (posterior)
  • Radial nerve
  • Extends index finger
  • Deep

Anatomy (14 decks)

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