The Forearm Flashcards
(105 cards)
1
Q
Which bone of forearm is on medial side?
A
ulna
2
Q
Which bone of forearm is on distal side?
A
Radius
3
Q
The ___ of the humerus is the common flexor origin
A
medial epicondyle of humerus
4
Q
The ___ of the humerus is the common extensor origin
A
lateral epicondyle of humerus
5
Q
The ___ of the humerus articulates with the ulna
A
Trochlea
6
Q
The ___ of the humerus articulates with the radius
A
capitulum
7
Q
The ___ position of forearm is anatomical position
A
supinated
8
Q
The ___ position is how we naturally tend to hold our forearm
A
pronated
9
Q
______ surrounds and invests the forearm and is continuous with the brachial fascia of the arm.
A
Antebrachial fascia
10
Q
What 3 nerves provides cutaneous innervation of forearm?
A
Musculocutaneous, medial antebrachial cutaneous, and radial n
11
Q
Superior ulnar collateral artery anastomoses with _____ artery
A
posterior ulnar recurrent artery
12
Q
Inferior ulnar collateral artery anastomoses with ___ artery
A
anterior ulnar recurrent artery
13
Q
Radial collateral artery anastomoses with ___ artery
A
radial recurrent artery
14
Q
Middle collateral artery anastomoses with ___ artery
A
interosseous recurrent artery
15
Q
How many superficial muscles are there in the anterior forearm?
A
4
16
Q
How many intermediate muscles are found in the anterior forearm?
A
1
17
Q
How many deep muscles are found in the anterior forearm?
A
3
18
Q
What are the superficial muscles of the anterior forearm?
A
Palmaris longus, pronator teres, flexor carpi radialis, and flexor carpi ulnaris
19
Q
Proximal Attachment:-medial epicondyle of humerus
Distal Attachment:-flexor retinaculum; continuous with palmar aponeurosis
A
Palmaris longus
20
Q
Proximal Attachment:-coronoid process of ulna
Distal Attachment:-middle of lateral surface of radius
A
Pronator teres
21
Q
Proximal Attachment:-medial epicondyle of humerus(“common flexor origin”)
Distal Attachment:-base of 2nd metacarpal
A
Flexor carpi radialis
22
Q
What muscles are part of the intermediate layer of anterior forearm?
A
Flexor digitorum superficialis
23
Q
Proximal Attachment:-medial epicondyle of humerus (humeral head)-Olecranon and posterior border of ulna (ulnar head)
Distal Attachment:-pisiform, hook of hamate, 5th metacarpal
A
Flexor carpi ulnaris
24
Q
Proximal Attachment:-medial epicondyle of humerus, superior½ of anterior border of radius
Distal Attachment:-shafts of middle phalanges of medial 4 digits
A
Flexor digitorum superficialis
25
What muscles are part of the deep layer of anterior forearm?
Flexor digitorum profundus, flexor pollicis longus, and pronator quadratus
26
Proximal Attachment:-proximal ¾ of medial and anterior surfaces of ulna and interosseous membrane
Distal Attachment:-bases of distal phalanges of 2nd-5th fingers
Flexor digitorum profundus
27
Proximal Attachment:-anterior surface of radius and interosseous membrane
Distal Attachment:-base of distal phalanx of thumb
Flexor pollicis longus
28
Proximal Attachment:-distal ¼ of anterior surface of ulna
Distal Attachment:-distal ¼ of anterior surface of radius
Actions:-pronates forearm, deep fibers bind radius & ulna together
Innervation:-median nerve via anterior interosseous nerve
Pronator quadratus
29
How many muscles are there in the superficial layer of posterior forearm?
6
30
How many muscles are there in the deep layer of posterior forearm?
5
31
Which muscle of the forearm is in the posterior compartment but functions to flex the elbow?
Brachioradialis
32
brachioradialis(flexes elbow joint), extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, and extensor carpi ulnaris are part of the _____ layer of the posterior forearm
superficial
33
ALL muscles of the posterior forearm are innervated by the _____ nerve via the deep branch of the radial nerve or the posterior interosseous nerve.
radial nerve
34
ALL muscles of the posterior forearm are innervated by the radial nerve via the ____ branch of the radial nerve or the ______ nerve.
deep branch; posterior interosseous
35
_____ branch of radial nerve (lateral, runs beneath brachioradialis) provides CUTANEOUS innervation ONLY (no motor branches) in posterior forearm
Superficial branch
36
Deep branch of radial nerve becomes ____ nerve
posterior interosseous nerve
37
Proximal Attachment:-proximal 2/3 of supraepicondylar ridge of humerus
Distal Attachment:-distal radius, proximal to styloid process
Brachioradialis
38
Proximal Attachment:-lateral supracondylar ridge of humerus
| Distal Attachment:-dorsal aspect of base of 2nd metacarpal
Extensor carpi radialis longus
39
Proximal Attachment:-lateral epicondyle of humerus(common extensor origin)
Distal Attachment:-dorsal aspect of base of 3rd metacarpal
Extensor carpi radialis brevis
40
Proximal Attachment:-lateral epicondyle of humerus and posterior border of ulna
Distal Attachment:-dorsal aspect of base fo 5th metacarpal
Extensor carpi ulnaris
41
Proximal Attachment:-lateral epicondyle of humerus(common extensor origin)
Distal Attachment:-extensor expansions of medial 4 fingers
Extensor digitorum
42
Proximal Attachment:-lateral epicondyle of humerus(common extensor origin)
Distal Attachment:-extensor expansion of 5th finger
Extensor digiti minimi
43
tendons of extensor digitorum form a dorsal expansion over the metacarpophalangeal (MP) and interphalangeal (IP) joints called the ____ and _____
extensor expansion and extensor hood
44
supinator, extensor indicis, abductor pollicis longus, extensor pollicis longus, and extensor pollicis brevis are all part of the ___ layer of the posterior forearm
deep layer
45
abductor pollicis longus, extensor pollicis longus, and extensor pollicis brevis are considered the ____ muscles of the forearm
"outcropping" muscles
46
ALL of the deep layer of the posterior forearm are innervated by the deep branch of the ___ nerve, or the _____ nerve, which is the continuation of this same nerve.
radial nerve; posterior interosseous
47
Proximal Attachment:-lateral epicondyle of humerus, radial collateral & anular ligaments, ulnar crest
Distal Attachment:-proximal 1/3 of radius (nearly all surfaces,as it wraps around the bone)
Supinator
48
Proximal Attachment:-posterior surface of distal 1/3 of ulna and interosseous membrane
Distal Attachment:-extensor expansion of 2nd finger
Extensor indicis
49
Proximal Attachment:-posterior surface of proximal ½ of ulna and radius,interosseous membrane
Distal Attachment:-base of 1st metacarpal
Abductor pollicis longus
50
Proximal Attachment:-posterior surface of distal 1/3 of radius,interosseous membrane
Distal Attachment:-dorsal aspect of proximal phalanx of thumb
Extensor pollicis brevis
51
Proximal Attachment:-posterior surface of middle 1/3 of ulna,interosseous membrane
Distal Attachment:-dorsal aspect of base of distal phalanx of thumb
Extensor pollicis longus
52
What are the anatomical relationships of the forearm from lateral to medial in regard to nerves and arteries
Superficial branch of the Radial nerve, Radial artery, Median Nerve, Ulnar Artery, Ulnar Nerve
53
The ulnar nerve runs ____ to the medial epicondyle
posterior
54
The ulnar nerve Runs along the medial forearm under what muscle?
flexor carpi ulnaris
55
Ulnar nerve Goes through ____ lateral to the ____ bone (this is a fascial compartment)
Guyon’s canal; pisiform
56
____ nerve Enters the hand and supplies most of the intrinsic muscles of the hand
Ulnar nerve
57
T/F: Ulnar nerve and ulnar artery Run together
True
58
Ulnar nerve is ___ to the ulnar artery
medial
59
____ artery is Located under flexor carpi ulnaris or just lateral to it
ulnar artery
60
ulnar artery and nerve run ___ to pisiform bone and Guyon’s canal
lateral
61
___ nerve runs through pronator teres
Median nerve
62
____ nerve runs deep to flexor digitorum superficialis
median
63
___ nerve runs between flexor digitorum superficialis and flexor digitorum profundus
Median
64
____ nerve runs deep to flexor retinaculum through carpal tunnel
Median nerve
65
____ artery Located under flexor carpi ulnaris or just lateral to it
ulnar artery
66
ulnar artery and ULNAR nerve run ___ to pisiform bone and Guyon’s canal
lateral
67
radial artery is ____ to the superficial branch of the radial nerves
medial
68
_____ artery is Under brachioradialis or just medial to it
radial
69
Anterior interosseous nerve & anterior interosseous artery run ____ to the pronator quadratus muscle
deep
70
Actions:-flexes hand at wrist, tenses palmar aponeurosis
Palmaris longus
71
Palmaris longus is innervated by ____ nerve
median
72
Actions:-pronates and flexes forearm at elbow
Pronator teres
73
Innervation of pronator teres is ___ nerve
Median nerve
74
Actions:-flexes and abducts hand at wrist
Flexor Carpi radialis
75
Innervation of flexor carpi radialis is from ____ nerve
Median nerve
76
Actions:-flexes and adducts hand at wrist
Flexor Carpi Ulnaris
77
Innervation of Flexor Carpi Ulnaris is from ____ nerve
Ulnar nerve
78
Actions:-flexes middle phalanges at proximal interphalangeal joint, flexes proximal phalanges at metacarpophalangeal joints
Flexor Digitorum Superficialis
79
Innervation of Flexor Digitorum Superficialis is from ____ nerve
median nerve
80
Actions:-flexes distal phalanges at interphalangeal joints (power grip)
Flexor digitorum profundus
81
Innervation of Flexor digitorum profundus
median* & ulnar nerves
| - *anterior interosseous nerve branch from median nerve
82
Actions:-flexes thumb
Flexor pollicis longus
83
Innervation of Flexor pollicis longus is from ____ nerve via _____
median nerve via anterior interosseous nerve (C8, T1)
84
Actions:-flexes forearm when it is pronated (about midprone position)
Brachioradialis
85
Innervation of Brachioradialis is from ____ nerve
radial nerve
86
Actions:-supinates forearm, bringing radius back to anatomical position
Supinator
87
Innervation of Supinator is from deep branch of ____ nerve
deep branch of radial nerve
88
Actions:-extend and abduct hand at wrist.
Extensor carpi radialis longus
89
Innervation of Extensor carpi radialis longus is from ____ nerve
Radial nerve
90
Actions:-extend and abduct hand at wrist
Extensor carpi radialis brevis
91
Innervation of Extensor carpi radialis brevis is from deep branch of _____ nerve
radial nerve
92
Actions:-extends and adducts hand at wrist
Extensor carpi ulnaris
93
Innervation of Extensor carpi ulnaris is ______ nerve
posterior interosseous nerve (remember that this nerve is the continuation of the deep branch of the radial nerve)
94
Actions:-extends medial 4 fingers at metacarpophalangeal joints and somewhat at interphalangeal joints
Extensor digitorum
95
Innervation of Extensor digitorum is from ____ nerve
posterior interosseous nerve (remember that this nerve is the continuation of the deep branch of the radial nerve)
96
Actions:-extends 5th finger at metacarpophalangeal joint and secondarily at interphalangeal joints
Extensor digiti minimi
97
Innervation of Extensor digiti minimi is from ____ nerve
posterior interosseous nerve(remember that this nerve is the continuation of the deep branch of the radial nerve)
98
Actions:-independent extension of 2nd finger, but also helps with extension of wrist
Extensor indicis
99
Innervation of Extensor indicis is from ____ nerve
posterior interosseous nerve (remember that this nerve is the continuation of the deep branch of the radial nerve)
100
Actions:-abducts thumb and extends it at carpometacarpal joint
Abductor pollicis longus
101
Innervation of Abductor pollicis longus from ___ nerve
posterior interosseous nerve(remember that this nerve is the continuation of the deep branch of the radial nerve)
102
Actions:-extends proximal phalanx of thumb at its metacarpophalangeal joint, also extends carpometacarpal joint
Extensor pollicis brevis
103
Innervation of Extensor pollicis brevis is from ____ nerve
posterior interosseous nerve(remember that this nerve is the continuation of the deep branch of the radial nerve)
104
Actions:-extends distal phalanx of thumb at its interphalangeal joint and extends the metacarpophalangeal and carpometacarpal joint
Extensor pollicis longus
105
Innervation of Extensor pollicis longus is from ____ nerve
posterior interosseous nerve(remember that this nerve is the continuation of the deep branch of the radial nerve)
