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Forearm Flashcards

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1
Q

Name the anterior compartment muscles of the forearm

A

Pronation Teres
Flexor carpi radialis
Palmaris longus
Flexor digitorum superficialis
Flexor carpi ulnaris
Flexor digitorum profundus
Flexor policis longus
Pronation Quadratus

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2
Q

Which muscles produce pronation at radio-ulnar joint?

A

Pronator Teres
Pronator Quadratus
Brachioradialis

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3
Q

Which muscles produce supination at the radio-ulnar joint?

A

Supination
Biceps brachii
Brachioradialis

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4
Q

Which muscles produce flexion at the wrist?

A

Flexor carpi radialis and flexor carpi ulnaris

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5
Q

Which muscle produce extension at the wrist?

A

Extensor carpi radialis Longus
Extensor carpi radialis Brevis
Extensor carpi ulnaris

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6
Q

Which muscles produce radial deviation?

A

Flexor carpi radialis
Extensor carpi radialis longus
Extensor carpi radialis brevis

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7
Q

Which muscles produce ulnar deviation?

A

Flexor carpi ulnaris
Extensor carpi ulnaris

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8
Q

Name the superficial flexors (in the anterior compartment of the forearm)

A

Flexor carpi radialis
Palmaris longus
Flexor digitorum superficialis
Flexor carpi ulnaris

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9
Q

Which muscle lies most laterally in the superficial group of the anterior compartment of the forearm?

A

Flexor rapid radialis

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10
Q

Where does flexor carpi radialis originate?

A

Medial epicondyle of humerus (via common flexor tendon)

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11
Q

Where does flexor carpi radialis insert?

A

Palmar surface of bases of metacarpals 2 and 3

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12
Q

What is the nerve supply of flexor carpi radialis?

A

Median nerve C6,7

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13
Q

What are the actions of flexor carpi radialis?

A

Flexion and abduction at wrist

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14
Q

What is the name of the muscle that not everybody has in their forearm?

A

Palmaris Longus

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15
Q

Where does Palmaris longus originate?

A

Medial epicondyle of humerus (common flexor tendon)

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16
Q

Where does Palmaris longus insert?

A

Flexor retinaculum and apex of Palmar aponeurosis

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17
Q

What is the nerve supply of palmaris longus?

A

Median nerve C7,8

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18
Q

What are the actions of palmaris longus?

A

Weak wrist flexor
Tightens palmar fascia

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19
Q

What muscles produce flexion of the fingers?

A

Flexor digitorum superficialis
Flexor digitorum profundus

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20
Q

What muscle produces flexion of the thumb?

A

Flexor policis Longus

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21
Q

Where do the two heads of flexor digitorum profundus originate?

A

Medial epicondyle of humerus (via common flexor tendon) and coronoid process of ulna
Proximal 2/3 anterior border of radius

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22
Q

Where does flexor digitorum superficialis insert?

A

Insert by 4 tendon to either side palmar surface of middle phalanx of each finger

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23
Q

What is the nerve supply of flexor digitorum superficialis?

A

Median nerve C6,7,8 T1

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24
Q

What are the actions of flexor digitorum superficialis?

A

Flexion at wrist, MCP and PIP joints
Tendon arrangement increases power of grip

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25
What are the deep flexors (of the anterior compartment of the forearm)?
Flexor pollicis longus Flexor digitorum profundus
26
Where does flexor digitorum profundus originate?
Medial side coronoid process, anterior and medial surfaces of ulna and interosseous membrane
27
here does flexor digitorum profundus insert?
Attaches by 4 tendons to bas of palmar surface of distal phalanx of each finger
28
What is the nerve supply of flexor digitorum profundus?
Anterior interosseous nerve C7,8,T1 and ulnar nerve C8,T1
29
What are the actions of flexor digitorum profundus?
Flexion of DIP joint of fingers Flexion of PIP and MCP joints Flexion of wrist joint
30
Where does flexor pollicis longus originate?
Anterior surface of radius and adjacent interosseous membrane
31
Where does flexor pollicis longus insert?
Palmar surface base of distal phalanx of thumb
32
What is the nerve supply of flexor pollicis longus?
anterior interosseous nerve C8,T1
33
What are the actions of flexor pollicis longus?
Flexion ar CMCP, MCP and Ip joint of thumb Assist in flexion at wrist joint
34
What are the contents of the carpal tunnel?
9 tendons -> 4 FDS, 4FDP, FPL Median nerve
35
Name the superficial muscles of the posterior compartment of the forearm
Brachioradialis Extensor carpi radialis longus Extensor carpi radialis brevis Extensor digitorum Extensor digiti minimi Extensor carpi ulnaris
36
name the deep muscles of the posterior compartment of the forearm
Supinator Abductor pollicis longus Extensor pollicis longus Extensor pollicis brevis Extensor indicis
37
What is the origin of extensor carpi radialis longus?
Lateral supracondylar ridge of humerus (above the common extensor origin)
38
Where does extensor carpi radialis insert?
Posterior surface base of metacarpal 2
39
What is the nerve supply of extensor carpi radialis longus?
Radial nerve C6,7
40
What are the actions of extensor carpi radialis longus?
Extension and abduction of hand at wrist joint
41
Where is the origin of extensor carpi radialis brevis?
Lateral epicondyle of humerus (via common extensor tendon)
42
Here does extensor carpi radialis brevis insert?
Posterior surface base of metacarpal 3
43
What is the nerve supply of extensor carpi radialis brevis?
Posterior interosseous nerve C6,7
44
Hat are the actions of extensor carpi radialis brevis?
Extension and abduction at wrist joint
45
Where is the origin of extensor carpi ulnaris?
Lateral epicondyle of humerus (via common extensor tendon) By shared aponeurosis from posterior border of ulna
46
Where does extensor carpi ulnaris insert?
Medial side of base of metacarpal 5
47
What is the nerve supply of extensor carpi ulnaris?
Posterior interosseous nerve C7,8
48
What are the actions of extensor carpi ulnaris?
Extension and adduction of hand at wrist joint
49
Which muscles produce extension of fingers?
Extensor digitorum Extensor digiti minimi Extensor indicis
50
Which muscles produce extension of the thumb?
Extensor pollicis longus Extensor pollicis brevis
51
Which muscles produce abduction of the thumb?
Abductor pollicis longus
52
Where does extensor digitorum originate?
Lateral epicondyle of humerus (common extensor tendon)
53
Where does extensor Digitorum insert?
Attaches by 4 tendons to bases of middle and distal phalanges of each finger
54
What is the nerve supply of extensor digitorum?
Posterior interosseous nerve C7,8
55
What are the actions of extensor digitorum?
Extension of the MCP joint of each finger Assists extension of IP joints
56
Where does extensor digiti minimi originate?
Lateral epicondyle of humerus (common extensor tendon)
57
Where does extensor digiti minimi insert?
Dorsal digital expansion of digit 5
58
Hat is the nerve supply of extensor digiti minimi?
Posterior interosseous nerve C7,8
59
What are the actions of extensor digiti minimi?
Extension at MCP joint of little finger Assists extension of IP joints
60
Where does extensor indicis originate?
Posterior surface of the distal ulna and interosseous membrane
61
Where does extensor indicis insert?
Dorsal digital expansion of index finger
62
What is the nerve supply of extensor indicis?
Posterior interosseous nerve C6,7
63
What are the actions of extensor indicis?
Extension of Ip and MCP joints of index finger
64
Where does extensor pollicis longus originate?
Posterior surface of middle third of ulna and interosseous membrane
65
Here does extensor pollicis longus insert?
Dorsal surface of base of distal phalanx of thumb
66
What is the nerve supply of extensor pollicis longus?
Posterior interosseous nerve C7,8
67
What are the actions of extensor pollicis longus?
Extension at IP joint Assists extension at MCP, CMC and wrist joints
68
Where does extensor pollicis brevis originate?
Posterior surface of middle of ulna and interosseous membrane
69
Here does extensor pollicis brevis insert?
Dorsal surface of proximal phalanx of thumb
70
Hat is the nerve supply of extensor pollicis brevis?
Posterior interosseous nerve C7,8
71
Hat are the actions of extensor pollicis brevis?
Extension of MCP and CMC joints of thumb
72
Where does abductor pollicis longus originate?
Posterior surface of upper ulna and middle radius and intervening interosseous membrane
73
Where does abductor pollicis longus insert?
Radial side of base of metacarpal 1
74
Hat is the nerve supply of abductor pollicis longus?
Posterior interosseous nerve C7,8
75
What are the actions of abductor pollicis longus?
Assists extension and abduction at 1st carpometacarpal joint Assists abduction at wrist
76
Which muscles are supplied by ulnar nerve?
Flexor carpi ulnaris Medial half of flexor digitorum profundus
77
Which muscles are supplied by the median nerve?
Pronator Teres Flexor carpi radialis Palmaris longus Flexor digitorum superficialis
78
Which muscles are supplied by anterior interosseous nerve?
Lateral half of flexor digitorum profundus Flexor pollicis longus Pronator Quadratus
79
Which muscles are supplied by the radial nerve?
Brachioradialis Extensor carpi radialis longus
80
Which muscles are supplied by posterior interosseous nerve?
Extensor Carpi Radialis Brevis Extensor Carpi Ulnaris Extensor Digitorum Extensor Digiti Minimi Extensor Indicis Extensor Pollicis Longus Extensor Pollicis Brevis Abductor Pollicis Longus
81
Which muscles originate from the common extensor origin?
Supinator Extensor digitorum Extensor digiti minimi Extensor carpi ulnaris Anconeus Extensor carpi radialis brevis
82
Which muscles originate from the common flexor tendon?
Pronator Teres Palmaris Longus Flexor carpi radialis Flexor carpi ulnaris Flexor digitorum superficialis
83
Which two muscles originate from the lateral supracondylar ridge of the humerus?
Brachioradialis Extensor carpi radialis longus

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