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PCOM Anatomy > Forearm Muscles > Flashcards

Forearm Muscles Flashcards

(83 cards)

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1
Q

Flexor Digitorum Superficialis proximal attachment?

A
  1. Humeral-Ulnar Head: Medial Epicondyle and coronoid process of ulna
  2. Radial Head: superior half of anterior radius (Oblique Line of Radius)
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2
Q

Flexor Digitorum Superficialis distal attachment?

A

Splits to both sides of the base of each Middle Phalanx of the 4 digits

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3
Q

Flexor Digitorum Superficialis function?

A
  1. Flexes the Proximal and Middle phalanges of medial 4 digits
  2. Flexes the hand at the Wrist if Fingers are Extended
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4
Q

Flexor Digitorum Superficialis Nerve?

A

Median

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5
Q

Flexor Digitorum Profundus proximal?

A

Anterior and Medial Surface of Proximal 3/4 Ulna and interosseous membrane

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6
Q

Flexor Digitorum Profundus distal?

A

Distal Phalanx of Medial 4 Digits (through FDS tunnel)

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7
Q

Flexor Digitorum Profundus function?

A
  1. Flexes the Distal phalanges of medial 4 digits

2. assists with Flexion the Wrist if Fingers are Extended

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8
Q

Flexor Digitorum Profundus Nerve?

A

Digits 2 and 3: Median

Digits 4 and 5: Ulnar

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9
Q

Flexor Pollicis Longus proximal?

A

Middle of Anterior Radius and Interosseus Membrane

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10
Q

Flexor Pollicis Longus distal?

A

Palmar Base of the Distal Phalanx of Thumb

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11
Q

Flexor Pollicis Longus function?

A
  1. Flexes the Distal Phalanx of Thumb
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12
Q

Flexor Pollicis Longus Nerve?

A

Median

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13
Q

Pronator Quadratus proximal?

A

Distal 1/4 Anteromedial Ulna

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14
Q

Pronator Quadratus distal?

A

Distal 1/4 Anterolateral Radius

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15
Q

Pronator Quadrates function?

A

Pronates the Forearm and Hand

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16
Q

Pronator Quadrates Nerve?

A

Median

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17
Q

Brachioradialis proximal?

A

proximal 2/3 of Lateral Supracondylar Ridge of Humerus

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18
Q

Brachioradialis distal?

A

Lateral Side of Distal 1/3 of Radius

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19
Q

Brachioradialis function?

A
  1. weakly Flexes the forearm when forearm is midpronated
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20
Q

Brachioradialis Nerve?

A

Radial

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21
Q

Extensor Carpi Radialis Longus proximal?

A

distal 1/3 of Lateral Supracondylar Ridge (below Brachioradialis)

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22
Q

Extensor Carpi Radialis Longus distal?

A

Dorsal Base of 2nd Metacarpal and a slip to 3rd metacarpal

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23
Q

Extensor Carpi Radialis Longus function?

A
  • extends and abducts hand at wrist

- radial deviation

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24
Q

Extensor Carpi Radialis Longus Nerve?

A

Radial

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25
Extensor Carpi Radialis Brevis proximal?
Lateral Epicondyle of humerus
26
Extensor Carpi Radialis Brevis distal?
Dorsal Base of 3rd Metacarpal with a slip to 2nd metacarpal
27
Extensor Carpi Radialis Brevis function?
Extends and abducts hand at wrist
28
Extensor Carpi Radialis Brevis Nerve?
Radial
29
Extensor Carpi Ulnaris proximal?
Lateral Epicondyle of humerus and posterior border of ulna
30
Extensor Carpi Ulnaris distal?
Dorsal Base of the 5th Metacarpal
31
Extensor Carpi Ulnaris function?
- extends and adducts hand at wrist | - ulnar deviation
32
Extensor Carpi Ulnaris Nerve?
Radial
33
Extensor Digitorum proximal?
Lateral Epicondyle of humerus
34
Extensor Digitorum distal?
extensor expansions of medial 4 digits
35
Extensor Digitorum function?
1. Extends 4 Medial Digits 2. assists Extension of Wrist (if fingers are flexed) 3. extends 5th digit
36
Extensor Digitorum Nerve?
Radial
37
Extensor Digiti Minimi proximal?
Lateral Epicondyle of humerus
38
Extensor Digiti Minimi distal?
extensor expansion of 5th digit
39
Extensor Digiti Minimi function?
Extends the 5th Digit
40
Extensor Digiti Minimi Nerve?
Radial
41
Extensor Indicis proximal?
1. Posterior Surface of Ulna | 2. Interosseus Membrane
42
Extensor Indicis distal?
extensor expansion of 2nd digit
43
Extensor Indicis function?
1. Extends 2nd Digit | 2. Assists to Extend the hand at the Wrist
44
Extensor Indicis Nerve?
Radial
45
Supinator proximal?
1. Lateral Epicondyle of humerus | 2. Supinator Crest of ulna
46
Supinator distal?
Proximal 1/3, Anterolateral, posterior Surface of Radius
47
Supinator function?
Supinates the Forearm
48
Supinator Nerve?
Radial
49
Extensor Pollicis Longus proximal?
1. Posterior Surface of middle 1/3 of Ulna | 2. Interosseus Membrane
50
Extensor Pollicis Longus distal?
Dorsal and Distal Phalanx of Thumb
51
Extensor Pollicis Longus function?
1. Extends Distal Phalanx of Thumb at IP nd MCP joints
52
Extensor Pollicis Longus Nerve?
Radial
53
Extensor Pollicis Brevis proximal?
1. Posterior Surface of Radius (below Abductor Pollicis Longus) 2. Interosseus Membrane
54
Extensor Pollicis Brevis distal?
Dorsal Base of Proximal Phalanx of Thumb
55
Extensor Pollicis Brevis function?
1. Extends Proximal Phalanx of thumb at carpometacarpal joint
56
Extensor Pollicis Brevis Nerve?
Radial
57
Abductor Pollicis Longus proximal?
1. Posterior Surface of Ulna and Radius | 2. Interosseus Membrane
58
Abductor Pollicis Longus distal?
Base of 1st Metacarpal
59
Abductor Pollicis Longus function?
Abducts and extends thumb at carpometacarpal joint
60
Abductor Pollicis Longus Nerve?
Radial
61
Pronator Teres attachments?
1. proximal: - medial epicondyle of humerus - coronoid process of ulna 2. distal: - midway along lateral surface of radius
62
Pronator Teres innervation?
median nerve
63
Pronator Teres function?
- pronates forearm | - assists with elbow flexion
64
Pronator Teres nerve?
median
65
Flexor carpi radialis attachments?
1. proximal: - medial epicondyle of humerus 2. distal: - base of 2nd metacarpal
66
flexor carpi radialis function?
- flexes and abducts hand at wrist | - radial deviation
67
flexor carpi radialis nerve?
median
68
palmaris longus attachments?
1. proximal: - medial epicondyle of humerus 2. distal: - distal half of flexor retinaculum and palmar aponeurosis
69
palmaris longus nerve?
median
70
palmaris longus function?
-flexes hand at wrist and tenses palmar aponeurosis
71
flexor carpi ulnaris attachments?
1. proximal: - medial epicondyle of humerus - olecranon and posterior border of ulna 2. distal: - pisiform - hook of hamate - base of 5th metacarpal
72
flexor carpi ulnaris function?
- flexes and adducts hand at wrist | - ulnar deviation
73
flexor carpi ulnaris nerve?
ulnar
74
What muscles make up the anterior compartment of arm? functions? innervation?
1. muscles: - coracobrachialis - biceps brachii - brachialis 2. innervated by musculocutaneous 3. anterior compartment are flexors
75
what muscles make up the posterior compartment of the arm? functions? innervation?
1. muscles: - triceps brachii 2. innervated by radial nerve 3. posterior compartment are extensors
76
what innervates the anterior compartment of the forearm?
1. median nerve | 2. ulnar nerve
77
what ligament makes up the anterior side of the elbow joint capsule?
- annular ligament | - medial and lateral collateral ligaments make up the sides of the capsule
78
What are the 4 superficial muscles, 1 intermediate muscle, and 3 deep muscles of the anterior compartment (also pronators) of the forearm?
1. superficial: - pronator teres - flexor carpi radialis - palmaris longus - flexor carpi ulnaris 2. intermediate: - flexor digitorum superficialis 3. deep: - flexor pollicis longus - flexor digitorum profundus - pronator quadratus
79
what 5 muscles attach proximally on the medial epicondyle of the humerus?
1. pronator teres 2. flexor carpi radialis 3. palmaris longus 4. flexor carpi ulnaris 5. flexor digitorum superficialis
80
What are the 7 superficial forearm extensors?
1. Brachioradialis 2. extensor carpi radialis longus 3. extensor carpi radialis brevis 4. extensor digitorum 5. extensor digiti minimi 6. extensor carpi ulnaris 7. anconeus
81
What are the 4 deep forearm extensors?
1. abductor pollicis longus 2. extensor pollicis brevis 3. extensor pollicis longus 4. extensor indicis - supinator is a deep forearm muscle, supinates
82
What structures go through the cubital fossa?
- median nerve - radial nerve (deep and superficial) - brachial artery (branches into radial and ulnar arteries)
83
what does the ulnar artery branch into?
- common interosseous artery | - then it splits into anterior and posterior interosseous arteries

PCOM Anatomy (6 decks)

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