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Forearm Flashcards

(74 cards)

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1
Q

Enumerate superficial group of flexors of the forearm

A
  • pronator teres
  • flexor carpi radialis
  • palmaris longus
  • flexor digitorum superficialis
  • flexor carpi ulnaris
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2
Q

Pronator Teres Origin

A

Superficial (humeral) head: common flexor origin

Deep Ulnar Head: medial border of coronoid process of the ulna

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3
Q

Insertion of Pronator Teres

A

Middle of the lateral surface of the shaft of the radius

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4
Q

Nerve Supply of Pronator Teres

A

Median Nerve

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5
Q

Actions of pronator teres

A

Helps in elbow flexion

Pronation

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6
Q

Origin of Flexor Carpi Radialis

A

Common flexor origin

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7
Q

Insertion of Flexor Carpi Radialis

A

2nd and 3rd metacarpal bones

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8
Q

Nerve Supply of Flexor Carpi Radialis

A

Median nerve

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9
Q

Action of flexor carpi Radialis

A

Flexion of the wrist
Abduction of the wrist
Flexion of the forearm

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10
Q

Origin of Palmaris Longus

A

Common flexor origin

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11
Q

Insertion of Palmaris Longus

A

Apex of palmar aponeurosis

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12
Q

Nerve Supply of palmaris longus

A

Median Nerve

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13
Q

Action of palmaris longus

A

Flexion of the wrist

Tension of palmar aponeurosis

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14
Q

Origin of flexor digitorum superficialis

A

Humeroulnar head: common flexor origin

Radial head: oblique line infront of the shaft of the humerus

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15
Q

Insertion of flexor digitorum superficialis

A

4 tendons into middle phalanges of medial 4 fingers
Divide when reaching the proximal phalanges
Reunite
Insert into sides of middle phalanges

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16
Q

Origin of Flexor Carpi Ulnaris

A

Humeral head: common flexor origin

Ulnar head: olecranon process, posterior border of ulna

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17
Q

Insertion of Flexor Carpi Ulnaris

A

Pisiform bone
Pisohamate ligament
Pisometacarpal ligament

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18
Q

Nerve Supply of Flexor Carpi Ulnaris

A

Ulnar nerve

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19
Q

Actions of Flexor Carpi Ulnaris

A
  • flexion of wrist joint
  • adduction of wrist joint
  • flexion of forearm
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20
Q

Origin of Flexor Pollicis Longus

A
  • upper 3/4 of anterior surface of shaft of the humerus

- interosseous membrane

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21
Q

Insertion of Flexor Pollicis Longus

A

Base of terminal phalanx of the thumb

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22
Q

Nerve Supply of Flexor Pollicis Longus

A

Anterior interosseous nerve

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23
Q

Action of Flexor Pollicis Longus

A
  • flexion of all thumb joints

- helps in wrist flexion

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24
Q

Origin of Flexor Digitorum Profundus

A
  • upper 3/4 of anterior and medial surfaces of the shaft of the ulna
  • interosseous membrane
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25
Insertion of Flexor Digitorum Profundus
Bases of terminal phalanges of medial 4 fingers
26
Nerve Supply of Flexor Digitorum Profundus
Medial 1/2 by ulnar nerve | Lateral half by anterior interosseous nerve
27
Actions of Flexor Digitorum Profundus
- flexion of all joints of the medial 4 fingers | - helps in flexion of the wrist joint
28
Origin of Pronator Quadratus
lower 1/4 of anterior surface of shaft of the ulna
29
Insertion of Pronator Quadratus
lower 1/4 of anterior surface of the shaft of the radius
30
Nerve Supply of Pronator Quadratus
Pronation of the forearm
31
Origin of Brachioradialis
upper 2/3 of lateral supracondylar ridge of the humerus
32
Insertion of Brachioradialis
Base of styloid process of the radius
33
Nerve Supply of Brachioradialis
radial nerve
34
Action of Brachioradialis
flexion of elbow at midprone position
35
Origin of extensor carpi radialis longus
lower 1/3 of lateral supracondylar ridge of the humerus
36
Insertion of Extensor Carpi Radialis Longus
posterior surface of the base of the 2nd metacarpal bone
37
Nerve Supply of the Extensor Carpi Radialis Longus
Radial Nerve
38
Actions of Extensor Carpi Radialis Longus
-extension -abduction of the wrist
39
Origin of Extensor Digitorum
common extensor origin
40
Insertion of Extensor Digitorum
Distal phalanges via dorsal mechanism of digits 2-5 (extensor expansion)
41
Nerve Supply of Extensor Digitorum
Posterior Interosseous nerve
42
Actions of Extensor Digitorum
Extension of all joints of the medial 4 fingers | Helps in wrist extension
43
Origin of Extensor Digiti Minimi
Common extensor origin
44
Insertion of Extensor Digiti Minimi
Extensor expansion of the little finger
45
Nerve Supply of Extensor Digiti Minimi
Posterior interosseous nerve
46
Actions of Extensor Digiti Minimi
- extension of all little finger joints | - wrist extension
47
Origin of extensor carpi ulnaris
- common extensor origin | - posterior border of ulna
48
Insertion of extensor carpi ulnaris
posterior surface of the base of the 5th metacarpal bone
49
Nerve Supply of extensor carpi ulnaris
Posterior interosseous nerve
50
Action of extensor carpi ulnaris
-Extension -adduction of the wrist
51
Origin of Anconeus
Posterior aspect of lateral epicondyle of the humerus
52
Insertion of Anconeus
Lateral surface of olecranon process of the ulna
53
Nerve Supply of the Anconeus
Radial nerve
54
Action of the Anconeus
Extension of elbow
55
Origin of Supinator
- supinator crest and fossa in ulna - lateral epicondyle of the humerus - lateral ligament of elbow joint - annular ligament
56
Insertion of Supinator
upper 1/3 of radius shaft
57
Nerve supply of Supinator
Posterior interosseous nerve
58
Action of Supinator
Supination of the forearm
59
Origin of Abductor Pollicis Longus
- posterior surface of ulna - poterior surface of radius - interosseous membrane
60
Insertion of Abductor Pollicis Longus
Posterior surface of the base of 1st metacarpal bone
61
Nerve Supply of Abductor Pollicis Longus
Posterior interosseous nerve
62
Action of Abductor Pollicis Longus
- abduction of the thumb | - extension of the thumb at the carpometacarpal joint
63
Origin of Extensor Pollicis Brevis
- posterior surface of radius | - interosseous membrane
64
Insertion of Extensor Pollicis Brevis
Proximal phalanx of the thumb
65
Nerve supply of Extensor Pollicis Brevis
Posterior interosseous nerve
66
Actions of Extensor Pollicis Brevis
-Extension of metacarpophalangeal and carpometacarpal joints of the thumb
67
Origin of Extensor Pollicis Longus
- posterior surface of the ulna | - interosseous membrane
68
Insertion of Extensor Pollicis Longus
Distal phalanx of the thumb
69
Nerve Supply of Extensor Pollicis Longus
Posterior interosseous nerve
70
Action of Posterior interosseous nerve
- extension of all thumb joints | - abduction of thumb
71
Origin of Extensor Indicis
- posterior surface of the ulna | - interosseous membrane
72
Insertion of Extensor Indicis
Extensor expansion of the index finger
73
Nerve Supply of Extensor Indicis
Posterior interosseous nerve
74
Actions of Extensor Indicis
Extension of all index finger joints

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