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*** Muscles *** > Forearm > Flashcards

Forearm Flashcards

1
Q

Anterior superficial muscles

A

Flexor carpi ulnaris
Palmaris longus
Flexor carpi radialis
Pronator teres

Originate from medial epicondyle of the humerus
Innervates by median nerve (except FCU = ulnar nerve)
Mainly act to flex forearm

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2
Q

Flexor carpi ulnaris

Origin

A

Long origin = ulna

Medial epicondyle of the humerus

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3
Q

Flexor carpi ulnaris

Insertion

A

Pisiform carpal bone

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4
Q

Flexor carpi ulnaris

Innervation

A

Ulnar nerve

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5
Q

Flexor carpi ulnaris

Function

A

Flexes and adducts at the wrist

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6
Q

Palmaris longus

Location

A

Directly above the median nerve at the wrist

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7
Q

Palmaris longus

Origin

A

Medial epicondyle of the humerus

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8
Q

Palmaris longus

Insertion

A

Flexor retinaculum

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9
Q

Palmaris longus

Innervation

A

Median nerve

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10
Q

Palmaris longus

Function

A

Flexes at the wrist

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11
Q

Flexor carpi radialis

Origin

A

Medial epicondyle of the humerus

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12
Q

Flexor carpi radialis

Insertion

A

Base of metacarpals II and III

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13
Q

Flexor carpi radialis

Innervation

A

Median nerve

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14
Q

Flexor carpi radialis

Function

A

Flexes and adducts at the wrist

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15
Q

Pronator teres

Location

A

Medial border of cubital fossa

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16
Q

Pronator teres

Origin

A

Coronoid process of the ulna

Medial epicondyle of the humerus

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17
Q

Pronator teres

Insertion

A

Mid shaft of the radius

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18
Q

Pronator teres

Innervation

A

Median nerve

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19
Q

Pronator teres

Function

A

Pronates the forearm

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20
Q

Anterior intermediate muscles

A

Flexor digitorum superficialis

Median nerve and ulnar artery pass between the 2 heads

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21
Q

Flexor digitorum superficialis

Origin

A

Medial epicondyle of humerus

Radius

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22
Q

Flexor digitorum superficialis

Insertion

A

Middle phalanges of the four fingers

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23
Q

Flexor digitorum superficialis

Innervation

A

Median nerve

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24
Q

Flexor digitorum superficialis

Function

A

Flexes:

  • IP joint
  • MTP joints
  • Wrist
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25
Anterior deep muscles
Flexor digitorum profundus Flexor pollicis longus Pronator quadratus Innervated by median nerve (except for medial 1/2 of flexor digitorum profundus
26
Flexor digitorum profundus | Origin
Ulna
27
Flexor digitorum profundus | Insertion
Distal phalanges of the four fingers
28
Flexor digitorum profundus | Innervation
Medial 1/2 = ulna nerve | Lateral 1/2 = median nerve (anterior interosseous branch)
29
Flexor digitorum profundus | Function
Flexes distal IP joints and the wrist
30
Flexor pollicis longus | Origin
Anterior surface of the radius
31
Flexor pollicis longus | Insertion
Base of the distal phalanx of the thumb
32
Flexor pollicis longus | Innervation
Median nerve (anterior interosseous branch)
33
Flexor pollicis longus | Function
Flexes IP and MTP joints of the thumb
34
Pronator quadratus | Origin
Anterior surface of the ulna
35
Pronator quadratus | Insertion
Anterior surface of the radius
36
Pronator quadratus | Innervation
Median nerve (anterior interosseous branch)
37
Pronator quadratus | Function
Pronates the forearm
38
Posterior superficial muscles
``` Brachioradialis Extensor carpi radialis longus/brevis Extensor digitorum Extensor digiti minimi Extensor carpi ulnaris Anconeus ``` All innervated by the radial nerve Act to extend the wrist and fingers (except for brachioradialis)
39
Brachioradialis | Origin
Lateral supracondylar ridge of the humerus
40
Brachioradialis | Insertion
Distal end of the radius
41
Brachioradialis | Innervation
Radial nerve
42
Brachioradialis | Function
Flexes at the elbow
43
Extensor carpi radialis longus/brevis | Origin
``` Longus = supracondylar ridge of humerus Brevis = lateral epicondyle of humerus ```
44
Extensor carpi radialis longus/brevis | Insertion
Metacarpal bones II/III
45
Extensor carpi radialis longus/brevis | Innervation
Radial nerve
46
Extensor carpi radialis longus/brevis | Function
Extends and abducts the wrist
47
Extensor digitorum | Origin
Lateral epicondyle of the humerus
48
Extensor digitorum | Insertion
Extensor hood of each finger
49
Extensor digitorum | Innervation
Radial nerve (deep branch)
50
Extensor digitorum | Function
Extension at IPJ and MTPJ
51
Extensor digiti minimi | Origin
Lateral epicondyle of the humerus
52
Extensor digiti minimi | Insertion
Extensor hood of little finger
53
Extensor digiti minimi | Innervation
Radial nerve (deep branch)
54
Extensor digiti minimi | Function
Extends little finger
55
Extensor carpi ulnaris | Origin
Lateral epicondyle of the humerus
56
Extensor carpi ulnaris | Insertion
Base of metacarpal V
57
Extensor carpi ulnaris | Innervation
Radial nerve (deep branch)
58
Extensor carpi ulnaris | Function
Extension and adduction of wrist
59
Anconeus | Origin
Lateral epicondyle of the humerus
60
Anconeus | Insertion
Posterior/lateral surfaces of olecranon (ulna)
61
Anconeus | Innervation
Radial nerve
62
Anconeus | Function
Extends and stab elbow | Abducts ulna during pronation
63
Deep posterior muscles
``` Supinator Abductor pollicis longus Extensor pollicis brevis Extensor pollicis longus Extensor indicis proprius ``` Act on the thumb and index finger (except for supinator)
64
Supinator | Location
Floor of cubital fossa
65
Supinator | Origin
Lateral epicondyle of the humerus | Posterior surface of ulna
66
Supinator | Insertion
Posterior surface of radius
67
Supinator | Innervation
Radial nerve (deep branch)
68
Supinator | Function
Supinator forearm
69
Abductor pollicis longus | Location
Lateral border of anatomical snuff box
70
Abductor pollicis longus | Origin
Interosseous membrane between radius and ulna
71
Abductor pollicis longus | Insertion
Lateral side of base of metacarpal I
72
Abductor pollicis longus | Innervation
Radial nerve (posterior interosseous branch)
73
Abductor pollicis longus | Function
Abducts the thumb
74
Extensor pollicis brevis | Location
Lateral border of anatomical snuff box
75
Extensor pollicis brevis | Origin
Posterior surface of radius + interosseous membrane
76
Extensor pollicis brevis | Insertion
Base of proximal phalanx of the thumb
77
Extensor pollicis brevis | Innervation
Radial nerve (posterior interosseous branch)
78
Extensor pollicis brevis | Function
Extends IPJ and MTPJ of thumb
79
Extensor pollicis longus | Location
Medial border of the anatomical snuffbox
80
Extensor pollicis longus | Origin
Posterior surface of the ulna + interosseous membrane
81
Extensor pollicis longus | Insertion
Distal phalanx of thumb
82
Extensor pollicis longus | Innervation
Radial nerve (posterior interosseous branch)
83
Extensor pollicis longus | Function
Extends at all joints in thumb (CMCJ/IPJ/MTPJ)
84
Extensor indicis proprius | Location
Enable independence of index finger
85
Extensor indicis proprius | Origin
Posterior surface of ulna + interosseous membrane
86
Extensor indicis proprius | Insertion
Extensor hood of index finger
87
Extensor indicis proprius | Innervation
Radial nerve (posterior interosseous branch)
88
Extensor indicis proprius | Function
Extends index finger

*** Muscles *** (9 decks)

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