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Functional Anatomy > Week Six > Flashcards

Week Six Flashcards

1
Q

What are the bones of the forearm and wrist joint?

A
  • Ulna
  • Radius
  • Proximal row of carpal bones
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2
Q

What type of joint is the radioulnar and what are the components?

A

-Synovial pivot joint
-Components
o Head of ulna
o Ulnar notch of radius
o Articular disc
-Uniaxial
o Pronation
o Supination
-1 degree of freedom

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3
Q

What type of joint is the radiocarpal and what are the ligaments?

A

-Synovial condyloid joint
-Ligaments
o Palmar radiocarpal
o Dorsal radiocarpal
o (Distal) Ulnar collateral
o (Distal) Radial collateral
-Biaxial
o Flexion‐extension
o Radial‐ulnar deviation
-2 degrees of freedom

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4
Q

What are the muscles of the anterior arm superficial layer?

A
  • Pronator teres
  • Flexor carpi radialis
  • Palmaris longus
  • Flexor carpi ulnaris
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5
Q

What is the proximal and distal attachment of the pronator teres?

A
  • P: medial epicondyle and coronoid process of ulna

- D: lateral surface of proximal radius

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6
Q

What is the action of the pronator teres?

A

Action: forearm pronation and elbow flexion

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7
Q

What is the nerve supply of the pronator teres?

A

NS: median

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8
Q

What is the proximal and distal attachment of the flexor carpi radialis?

A
  • P: medial epicondyle of humerus

- D: palmar surface of base of 2nd metacarpal

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9
Q

What is the action of the flexor carpi radialis?

A

Action: wrist flexion and radial deviation (abd)

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10
Q

What is the nerve supply of the flexor carpi radialis?

A

NS: median

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11
Q

What is the proximal and distal attachment of the palmaris longus?

A
  • P: medial epicondyle of humerus

- D: flexor retinaculum and palmar aponeurosis

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12
Q

What is the action of the palmaris longus?

A

Action: wrist flexion

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13
Q

What is the nerve supply of the palmaris longus?

A

NS: median

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14
Q

What is the proximal and distal attachment of the flexor carpi ulnaris?

A
  • P: medial epicondyle of humerus

- D: palmar surface of pisiform, hook of the hamate and base of 5th metacarpal

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15
Q

What is the action of the flexor carpi ulnaris?

A

Action: wrist flexion and ulnar deviation (add)

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16
Q

What is the nerve supply of the flexor carpi ulnaris?

A

NS: ulnar

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17
Q

What are the muscles of the anterior arm intermediate layer?

A

-Flexor digitorum superficialis

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18
Q

What is the proximal and distal attachment of the Flexor digitorum superficialis?

A
  • P: medial epicondyle of humerus

- D: sides of shafts of middle phalanges of digits 2 ‐ 5

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19
Q

What is the action of the Flexor digitorum superficialis?

A

Action: flexion at wrist, metacarpophalangeal and proximal interphalangeal joints of digits 2 ‐ 5

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20
Q

What is the nerve supply of the Flexor digitorum superficialis?

A

NS: median

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21
Q

What are the muscles of the anterior arm deep layer?

A
  • Flexor digitorum profundus
  • Flexor pollicis longus
  • Pronator quadratus
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22
Q

What is the proximal and distal attachment of the Flexor digitorum profundus?

A
  • P: proximal anterior medial surface of ulna and IOM

- D: palmar surface of base of distal phalanges of digits 2 ‐ 5

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23
Q

What is the action of the Flexor digitorum profundus?

A

Action: distal interphalangeal joint flexion of digits 2 ‐ 5

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24
Q

What is the nerve supply of the Flexor digitorum profundus?

A

NS: ulnar and anterior interosseous

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25
What is the proximal and distal attachment of the Flexor pollicis longus?
- P: anterior surface of radius and IOM | - D: palmar surface of base of distal phalange of 1st digit
26
What is the action of the Flexor pollicis longus?
Action: metacarplaphalangeal and interphalangeal flexion of 1st digit
27
What is the nerve supply of the Flexor pollicis longus?
NS: anterior interosseous
28
What is the proximal and distal attachment of the Pronator quadratus?
- P: distal anterior surface of ulna | - D: distal anterior surface of radius
29
What is the action of the Pronator quadratus?
Action: radio‐ulnar joint pronation
30
What is the nerve supply of the Pronator quadratus?
NS: anterior interosseous
31
What are the muscles of the posterior arm superficial layer?
- Brachioradialis - Extensor carpi radialis longus - Extensor carpi radialis brevis - Extensor digitorum - Extensor digiti minimi - Extensor carpi ulnaris
32
What is the proximal and distal attachment of the Brachioradialis?
- P: proximal 2/3 of lateral supra‐ epicondylar (condylar) ridge of humerus - D: lateral distal surface of radius
33
What is the action of the Brachioradialis?
Action: weak elbow flexor (“drinker’s muscle")
34
What is the nerve supply of the Brachioradialis?
NS: radial
35
What is the proximal and distal attachment of the Extensor carpi radialis longus?
- P: lateral supra‐epicondylar ridge of humerus | - D: dorsal aspect of base of 2nd metacarpal
36
What is the action of the Extensor carpi radialis longus?
Action: wrist extension and radial deviation (abduction)
37
What is the nerve supply of the Extensor carpi radialis longus?
NS: radial
38
What is the proximal and distal attachment of the Extensor carpi radialis brevis?
- P: lateral epicondyle of the humerus | - D: dorsal aspect of base of 3rd metacarpal
39
What is the action of the Extensor carpi radialis brevis?
Action: wrist extension and radial deviation
40
What is the nerve supply of the Extensor carpi radialis brevis?
NS: (deep branch) of radial
41
What is the proximal and distal attachment of the Extensor digitorum?
- P: lateral epicondyle of humerus | - D: extensor expansions of digits 2‐4
42
What is the action of the Extensor digitorum?
Action: wrist, metacarpophalangeal & interphalangeal joints extension
43
What is the nerve supply of the Extensor digitorum?
NS: (deep branch) of radial
44
What is the proximal and distal attachment of the Extensor digiti minimi?
- P: lateral epicondyle of humerus | - D: extensor expansion of 5th digit
45
What is the action of the Extensor digiti minimi?
Action: metacarpophalageal & interphalangeal joints extension
46
What is the nerve supply of the Extensor digiti minimi?
NS: (deep branch) of radial
47
What is the proximal and distal attachment of the xtensor carpi ulnaris?
- P: lateral epicondyle of humerus & posterior border of ulna - D: dorsal aspect of base of 5th metacarpal
48
What is the action of the xtensor carpi ulnaris?
Action: wrist extension and ulnar deviation (adduction)
49
What is the nerve supply of the xtensor carpi ulnaris?
NS: (deep branch) of radial
50
What are the muscles of the posterior arm deep layer?
- Supinator - Abductor pollicis longus - Extensor pollicis brevis - Extensor pollicis longus - Extensor indicis
51
What is the proximal and distal attachment of the Supinator?
- P: lateral epicondyle of humerus, radial collateral and anular ligaments, crest of ulna - D: lateral surface of proximal 1/3 of radius
52
What is the action of the Supinator?
Action: supination of forearm
53
What is the nerve supply of the Supinator?
NS: (deep branch of) radial
54
What is the proximal and distal attachment of the Abductor pollicis longus?
- P: posterior surface of proximal ½ of ulna, radius, and IOM - D: base of 1st metacarpal
55
What is the action of the Abductor pollicis longus?
Action: carpometacarpal joint abduction and extension of 1st digit
56
What is the nerve supply of the Abductor pollicis longus?
NS: posterior interosseous nerve (radial)
57
What is the proximal and distal attachment of the Extensor pollicis brevis?
- P: posterior surface of distal 1/3 of radius and IOM | - D: dorsal aspect of base of proximal phalanx of 1st digit
58
What is the action of the Extensor pollicis brevis?
Action: 1st digit (thumb) extension
59
What is the nerve supply of the Extensor pollicis brevis?
NS: posterior interosseous nerve (radial)
60
What is the proximal and distal attachment of the Extensor Pollicis Longus?
- P: posterior surface of middle 1/3 of ulna and IOM | - D: dorsal aspect of base of distal phalanx of 1st digit
61
What is the action of the Extensor Pollicis Longus?
Action: extension of 1st digit
62
What is the nerve supply of the Extensor Pollicis Longus?
NS: posterior interosseous nerve (radial)
63
What is the proximal and distal attachment of the Extensor Indicis?
- P: posterior surface of distal 1/3 of ulna and IOM | - D: extensor expansion of 2nd digit
64
What is the action of the Extensor Indicis?
Action: extension of 2nd digit
65
What is the nerve supply of the Extensor Indicis?
NS: posterior interosseous nerve (radial)
66
What are the bones that make up the joints of the hand?
- Carpals - Metacarpals - Phalanges

Functional Anatomy (7 decks)

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