Forearm and Hand Flashcards
(94 cards)
1
Q
3 functions of the interosseous membrane
A
Hinge
Muscle attachment
Force transmission
2
Q
3 joints of the wrist
A
Radio-carpal
Mid-carpal
Carpo-metacapal
3
Q
Radio-carpal joint location
A
Between radius and fibrous articular disc proximally
Between scaphoid, lunate and triquetral distally
4
Q
Mid-carpal joint location
A
Between two rows of carpal bones
5
Q
Carpo-metacarpal joint location
A
Between distal row of carpals and medial 4 digits
6
Q
8 carpal bones
A
Scaphoid Lunate Triquetrum Pisiform Trapezium Trapezoid Capitate Hamate
7
Q
The hand only has 4:
A
Middle phalanges
8
Q
Flexor retinaculum
A
Fibrous band on the palmar side of the hand near the wrist
Forms the carpal tunnel by arching over and covering the carpal bones
9
Q
4 superficial muscles in the anterior forearm
A
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
10
Q
Humeral head of pronator teres origin
A
Medial supracondylar ridge
11
Q
Ulnar head of pronator teres origin
A
Coronoid process
12
Q
Pronator teres insertion
A
Lateral surface of radius
13
Q
Flexor carpi radialis origin
A
Medial epicondyle
14
Q
Flexor carpi radialis insertion
A
Anterior aspect of base of second metacarpal
15
Q
Palmaris longus origin
A
Medial epicondyle
16
Q
Palmaris longus insertion
A
Palmar aponeurosis
17
Q
Flexor carpi ulnaris origin
A
Medial epicondyle
18
Q
Flexor carpi ulnaris insertion
A
The pisiform and the hamate
19
Q
1 intermediate muscle in the anterior forearm
A
Flexor digitorum superficialis
20
Q
Flexor digitorum superficialis origin
A
Common flexor tendon
21
Q
Flexor digitorum superficialis insertion
A
Anterior margins on the bases of the middle phalanges of the fingers
22
Q
3 deep muscles in the anterior forearm
A
Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus
23
Q
Flexor digitorum profundus origin
A
Anterior ulna and interosseous membrane
24
Q
Flexor digitorum profundus insertion
A
Distal phalanges of fingers
25
Flexor pollicis longus origin
Anterior radius and interosseous membrane
26
Flexor pollicis longus insertion
Base of distal phalynx of thumb
27
Pronator quadratus origin
Medial anterior ulna
28
Pronator quadratus insertion
Lateral anterior radius
29
Muscles of the anterior forearm innervated by median nerve
```
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor digitorum superficialis
Flexor pollicis longus
Pronator quadratus
Lateral half of flexor digitorum profundus
```
30
Muscles of the anterior forearm innervated by ulnar nerve
Flexor carpi ulnaris
| Medial half of flexor digitorum profundus
31
Muscles of the anterior forearm innervated by the anterior interosseous branch of the median nerve
Pronator quadratus
Flexor pollicis longus
Lateral half of flexor digitorum profundus
32
Muscles innervated by recurrent branch of median nerve
Thenar muscles
| 1st and 2nd lumbricals
33
3 posterior compartment muscles that act upon the wrist
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor carpi ulnaris
34
3 posterior compartment muscles that act upon the thumb
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
35
3 posterior compartment muscles that extend the fingers
Extensor digitorum
Extensor indicis
Extensor digiti minimi
36
3 posterior compartment muscles that act upon the forearm only
Anconeus
Brachioradialis
Supinator
37
Brachioradialis origin
Lateral supracondylar ridge of the humerus
38
Brachioradialis insertion
Radial styloid process
39
Brachioradialis function
Flexes elbow
40
Brachioradialis innervation
Radial nerve
41
7 superficial muscles of the posterior compartment
```
Brachioradialis
Anconeus
Extensor carpi ulnaris
Extensor digiti minimi
Extensor digitorum
Extensor carpi radialis longus
Extensor carpi radialis brevis
```
42
5 deep muscles of the posterior compartment
```
Extensor indicis
Extensor pollicis longus
Abductor pollicis longus
Extensor pollicis brevis
Supinator
```
43
4 muscles that attach to the common extensor tendon
Extensor carpi radialis brevis
Extensor digitorum
Extensor digiti minimi
Extensor carpi ulnaris
44
The common extensor tendon attaches to the:
Lateral epicondyle of the humerus
45
The common flexor tendon attaches to the:
Medial epicondyle of the humerus
46
5 muscles that attach to the common flexor tendon
```
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor digitorum superficialis
Flexor carpi ulnaris
```
47
Extensor carpi ulnaris insertion
Base of 5th metacarpal
48
Extensor carpi radialis brevis insertion
Base of 3rd metacarpal
49
Extensor digiti minimi insertion
Dorsal digital expansion hood
50
Extensor digitorum insertion
Dorsal digital expansion hood
51
Extensor carpi radialis longus insertion
Base of 2nd metacarpal
52
Extensor carpi radialis longus origin
Lateral supracondylar ridge
53
Anconeus origin
Lateral epicondyle of humerus
54
Anconeus insertion
Olecranon of ulna
55
Supinator deep head origin
Proximal ulna
56
Supinator superficial head origin
Lateral epicondyle
57
Supinator insertion
Radial shaft
58
Abductor pollicis longus origin
Ulna, radius and interosseous membrance
59
Abductor pollicis longus insertion
Base of 1st metacarpal
60
Extensor pollicis brevis origin
Ulna and radius
61
Extensor pollicis brevis insertion
Base of proximal phalanx of thumb
62
Extensor pollicis longus origin
Ulna and interosseous membrane
63
Extensor pollicis longus insertion
Base of distal phalanx of thumb
64
Extensor indicis origin
Ulna and interosseous membrane
65
Extensor indicis insertion
Dorsal digital expansion hood
66
Deep transverse metacarpal ligaments location
Between the heads of 2nd and 3rd, 3rd and 4th and 4th and 5th metacarpals
67
Deep transverse metacarpal ligaments function
Stops fingers spreading too widely
68
Palmar ligaments location
Travel up the metacarpals and form the floor of fibro-osseus tunnels at the joints
69
Palmar aponeurosis
Triangular fibrous sheet fanning out from distal edge of flexor retinaculum
70
The tendon of _______ _____ inserts into the palmar aponeurosis
Palmaris longus
71
Dorsal interossei innervation
Deep branch of ulnar nerve
72
Dorsal interossei insertion
Midline of middle 3 digits - dorsal hood and base of digit
73
Dorsal interossei function
Abduction of fingers
74
Palmar interossei innervation
Deep branch of ulnar nerve
75
Palmar interossei insertion
Dorsal expansion hood of digits 1, 2, 4 and 5 directing away from midline
76
Palmar interossei function
Adduction of fingers
77
Adductor pollicis innervation
Deep branch of ulnar nerve
78
First and second lumbricals
Unipennate
Median nerve innervation
Attach laterally to dorsal hood
79
Third and fourth lumbricals
Bipennate
Ulnar nerve innervation
Attach laterally to dorsal hood
80
Extensor hood function
Holds extensor digitorum tendon on the knuckle
81
Attachment of extensor digitorum
Base of distal phalanx
82
Attachment of middle slip of extensor expansion
Base of middle phalanx
83
Attachment of flexor digitorum profundus
Base of distal phalanx
84
Attachment of flexor digitorum superficialis
Sides of anterior surface of the middle phalanx
85
When the flexor digitorum profundus contracts while the interossei and lumbricals relax:
The metacarpophalangeal and interphalangeal joints flex
86
When the flexor digitorum profundus contracts while the interossei and lumbricals contract:
The metacarpophalangeal joins flex and the interphalangeal joints extend
87
3 thenar muscles
Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis
88
3 hypothenar muscles
Abductor digiti minimi
Flexor digiti minimi
Opponens digiti minimi
89
The superficial branches of the ulnar nerve in the hand innervate:
The little finger and the ulnar side of the ring finger
90
The deep branches of the ulnar nerve in the hand innervate:
The hypothenar muscles, the interossei, the medial two lumbricals and adductor pollicis
91
The ulnar nerve passes ____ the flexor retinaculum
Over
| Then lies on the ulnar side of the ulnar artery
92
The median nerve passes ____ the flexor retinaculum
Under
| Then lies under the palmar aponeurosis
93
The thenar muscles are supplied by:
The recurrent branch of the median nerve
94
Deep muscles of the forearm are supplied by:
Anterior interosseous membrane from the short common interosseous artery from the ulnar artery
