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Myology 1 > Forearm > Flashcards

Forearm Flashcards

0
Q

Pronator teres

A 
O:  Two heads
       1) medial epicondyle via CFT
       2) coronoid process of the ulna
I:  lateral radius (middle 1/3)
A: pronation of forearm at proximal radioulnar joint
N: median
Blood: ulnar and radial
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1
Q

What are the superficial muscles of the anterior forearm?

A

Pronator teres
Flexor Carpi Radialis
Palmaris longus
Flexor Carpi ulnaris

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2
Q

Flexor Carpi Radialis

A 
O: medial condyle via CFT
I: base of 2nd and 3rd metacarpal 
A: 1) wrist flexion 2) radial deviation (also elbow flexion)
N: median
Blood: ulnar and radial
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3
Q

Palmaris longus

A 
*not in everyone*
O:  medial epicondyle via CFT
I: palmar aponeuroses and flexor retinaculum
A: wrist flexion (and elbow flexion)
N: median
Blood: ulnar
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4
Q

Flexor Carpi ulnaris

A

O: medial epicondyle via CFT
I: pisiform, hook of hamulus, 5th metacarpal
A: 1) wrist flexion; 2) ulnar deviation; (maybe elbow flexion)
N: ulna
Blood: ulnar

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5
Q

Name the intermediate muscles of the anterior forearm.

A

Flexor Digitorum Superficialis

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6
Q

Flexor Digitorum Superficialis

A

O: 1) medial epicondyle of humerus via CFT
2) coronoid process of ulna
3) proximal 1/3 of radius
I: palmar surface of middle phalanges 2-5 (and some wrist flexion)
A: flexes fingers 2-5 at MCPs and PIPs
N: median
Blood: ulnar and radial

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7
Q

What are the deep muscles of the anterior forearm?

A

Flexor Digitorum Profundus
Flexor Pollicis longus
Pronator quadratus

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8
Q

Flexor Digitorum Profundus

A

O: medial/anterior ulna and interosseous membrane
I: palmar surfaces of distal phalanges 2-5
A: flexes fingers 2-5 at MCPs DIPs. (And some wrist flexion)
N: median and ulnar (two!!)
Blood: radial, ulnar and ant. interosseous

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9
Q

Flexor Pollicis longus

A

O: anterior surface of radius and interosseous membrane
I: distal phalanx of thumb
A: thumb flexion at CMC, MCP, and IP (and some wrist flexion)
N: median
Blood: radial and ant. interosseous

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10
Q

Pronator quadratus

A 
O: anterior distal ulna
I: anterior distal radius
A: pronates forearm at distal radioulnar joint
N: median
Blood: anterior interosseous
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11
Q

What are the superficial muscles of the posterior forearms?

A 
Anconeus
Extensor Carpi Radialis longus
Extensor Carpi Radialis brevis
Extensor Digitorum 
Extensor Digiti Minimi 
Extensor Carpi ulnaris
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12
Q

Anconeus

A 
O:  lateral epicondyle of humerus (CET)
I: posterior proximal ulna (lateral to Olecranon process)
A: elbow extension 
N: radial
Artery: deep brachial (radial)
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13
Q

Extensor carpi radialis longus

A 
O: lateral supracondylar ridge
I: posterior base of metacarpal # 2
A: 1) elbow extension 2) radial deviation and elbow FLEXION 
N: radial 
Blood: brachial and radial
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14
Q

Extensor carpi radialis brevis

A 
O:  lateral epicondyle (CET)
I: posterior base of metacarpal #3
A:  1) wrist extension 2) radial deviation and 3) elbow FLEXION
N: radial
Blood: brachial and radial
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15
Q

What muscles are in the Wad of 3?

A

Brachioradialis
Extensor carpi radialis longus
Extensor carpi radialis brevis

16
Q

Extensor digitorum

A

O: lateral epicondyle via CET
I: middle and distal phalanges 2-5 (via dorsal digital expansion)
A: 1)wrist extension 2)finger extension 2-5 @ MCP, PIPs and DIPs
N: radial
Blood: posterior interosseus

17
Q

Extensor digiti minimi

A

O: lateral epicondyle (CET)
I: middle and distal phalanges of digit #5 via Dorsal digital expansion
A: 1)wrist extension 2)extension of finger #5 at MCP, PIP and DIP
N: radial
Blood: posterior interosseus

18
Q

Extensor carpi ulnaris

A

O: lateral epicondyle via CET and posterior middle 1/3 or ulna
I: posterior base of metacarpal #5
A: 1) wrist extension 2) ulnar deviation
(Elbow extension)
N: radial
Blood: posterior interosseus

19
Q

What bones make up the anatomical snuff box?

A

Posterior: EPL tendon
Anterior: EPB and Abductor Poll Long tendons
Proximal: styloid of radius
Floor: trapezium and/or scaphoid

20
Q

What comprise the deep muscles of the posterior forearm?

A 
Supinator
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus 
Extensor indicis
21
Q

Supinator

A

O: 1) lateral epicondyle (CET); 2) supinator crest of ulna
I: proximal 1/3 of radius (post/lat/ant)
A: supination of firearm
N: radial
Blood: radial and posterior interosseus

22
Q

Abductor pollicis longus

A

O: 1) middle 1/3 of posterior ulna; 2) interosseous membrane
I: posterior base of metacarpal #1
A: abducts thumb at CMC joint (and thumb extension)
N: radial
Blood: posterior interosseous

23
Q

Extensor pollicis brevis

A 
O: 1) posterior distal 1/3 of radius;
2) distal 1/3 of interosseous membrane
I: posterior base of proximal phalanx #1
A: extends thumb at CMC and MCP
N: radial
Blood: posterior interosseous
24
Q

Extensor pollicis longus

A

O: 1) posterior middle 1/3 of ulna;
2) middle 1/3 interosseous membrane

I: posterior base of distal phalanx #1 via distal digital expansion

A: extends thumb at CMC, MCP, and IP

N: radial

Blood: posterior interosseous

25
Q

Extensor indices

A

“Harry Pointer”

O: 1) posterior distal 1/3 of ulna;
2) interosseous membane

I: posterior aspect of middle and distal phalanges of digit #2 via distal digital expansion

A: 1) extends digit #2 at MCP, PIP and DIP. 2) wrist extension

N: radial

Blood: posterior interosseous

26
Q

The CFT is a point of origin for what muscles?

A 
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
Flexor digitorum superficialis
27
Q

The CET is a point of origin for what muscles?

A

Extensor carpi radialis brevis
Extensor carpi ulnaris
Extensor digitorum
Extensor digiti minimi

Myology 1 (9 decks)

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