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Musculo-skeletal > Upper Limb Anatomy 3 & 4 > Flashcards

Upper Limb Anatomy 3 & 4 Flashcards

(60 cards)

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1
Q

Name the muscles in the superficial group of the anterior forearm

A
  • Pronator teres
  • Flexor carpi radialis
  • Palmaris longus
  • Flexor carpi ulnaris
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2
Q

What are the superficial muscles of the anterior forearm attached to ?

A

The medial epicondyle of the humerus by the common flexor tenson

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3
Q

What are the actions of pronator teres?

A

Pronation and flexion of the forearm

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4
Q

What is the innervation of pronator teres?

A

Median n. (C6-7)

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5
Q

What are the actions of flexor carpi ulnaris?

A
  • Flexion of the wrist

- Adduction of the wrist

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6
Q

What are the actions of flexor carpi radialis?

A
  • Flexion of the wrist

- Abduction of the wrist

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7
Q

Which nerve innervates flexor carpi ulnaris?

A

Ulnar nerve

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8
Q

Which nerve innervates the superficial muscles of the anterior forearm (other than flexor carpi ulnaris)?

A

Median nerve

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9
Q

What is the main action of brachioradialis?

A

Flexion of the elbow in mid-pronated position

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10
Q

What is the innervation of the brachioradialis muscle?

A

Radial (C5,6 & 7)

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11
Q

Which fingers are the four tendons of flexor digitorum superficialis attached to?

A

Index, long, ring and small fingers (attached to middle phalanges)

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12
Q

What are the actions of the flexor digitorum superficialis?

A

Flexion of the wrist, metacarpophalangeal and interphalangeal joints

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13
Q

What is the innervation of flexor digitorum superficialis?

A

Median n. (C7-T1)

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14
Q

Name the three deep muscles of the forearm

A
  • Flexor digitorum profundus
  • Flexor pollicis longus
  • Pronator quadratus
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15
Q

What is the main action of flexor digitorum profundus?

A

Flexion of the wrist and finger joints

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16
Q

What is the innervation of the FDP?

A
  • Medial half (little + ring fingers): Ulnar nerve

- Lateral half (Middle and index fingers): Median nerve

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17
Q

What is the action of flexor pollicus longus and what is its innervation?

A
  • Long flexor of the thumb

- Median n. (anterior interosseus)

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18
Q

What is the action and innervation of pronator quadratus?

A
  • Pronation of the forearm

- Median nerve

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19
Q

Which muscles of the forearm are not supplied by the median nerve?

A
  • Flexor carpi ulnaris

- Medial half of flexor digitorum profundus

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20
Q

What are the two terminal branches of the brachial artery?

A
  • Radial

- Ulnar

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21
Q

Name the borders of the carpal tunnel

A
  • Roof: flexor retinaculum (fibrous band)
  • Lateral border: scaphoid and trapezium
  • Medial border: pisiform and hamate bones
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22
Q

Name the contents of the carpal tunnel

A
  • Median nerve
  • 4 tendons of flexor digitorum profundus
  • 4 tendons of flexor digitorum superficialis
  • Tendon of flexor pollicis longus
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23
Q

Which muscle of the forearm is continuous with the palmar aponeurosis

A

Palmar longus

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24
Q

Name the five compartments of the hand which contain intrinsic muscles of the hand

A
  • Thenar
  • Hypothenar
  • Adductor
  • Central (lumbricals and long flexor tendons)
  • Interosseous
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25
Name the three thenar muscles of the hand
- Abductor pollicis brevis - Flexor pollicis brevis - Opponens pollicis
26
What is the action of the thenar muscles?
Apposition of the thumb
27
Which nerve innervates the thenar muscles?
Median (C6-8)
28
Name the hypothenar muscles
- Abductor digiti minimi - Flexor digiti minimi - Opponens digiti minimi
29
Which nerve innervates the hypothenar muscles?
Ulnar nerve (C8-T1)
30
Name the two heads of adductor pollicis
Transverse and oblique heads
31
Which nerve innervates adductor pollicis
Ulnar nerve
32
What is the action of adductor pollicis?
Adducts the thumb
33
From which tendon do the lumbricals originate?
Tendon of flexor digitorum profundus
34
What are the actions of the lumbricals?
- Flexion of the fingers at the metacarpophalangeal joint | - Extension at the interphalangeal joint of 2nd to 5th digits
35
What is the innervation of the lumbricals?
- Medial 2: ulnar nerve | - Lateral 2: median nerve
36
What is the action of the dorsal interossei?
Abduction of the fingers
37
What is the action of the palmar interossei?
Adduction of the fingers
38
What is the innervation of the interossei?
Ulnar (C8-T1)
39
Which two arteries supply all of the blood to the hand?
Ulnar and radial arteries
40
Which artery is the main contributor of the superficial palmar arch?
Ulnar
41
Which artery is the main contributor of the deep palmar arch?
Radial
42
Which muscles are the only intrinsic muscles of the hand not supplied by the ulnar nerve?
- Thenar muscles | - First and second lumbricals
43
Which branch of the brachial plexus gives rise to the ulnar nerve?
Medial
44
What type of joint is the wrist joint?
Condyloid/ellipsoid
45
Which movements are possible at the wrist joint?
- Flexion - Extension - Circumduction - Adduction - Abduction
46
What is the combined action of extensor and flexor carpi ulnaris muscle on the wrist joint?
Adduction of the wrist
47
Which muscles are responsible for abduction of the wrist joint?
- Abductor pollicis longus - Flexor carpi radialis - Extensor carpi radialis longus - Extensor carpi radialis brevis
48
What is the action of most of the posterior compartment muscles of the forearm on the wrist joint?
Extension
49
Name the three muscles that extend and abduct or adduct the wrist
- Extensor carpi radialis longus - Extensor carpi radialis brevis - Extensor carpi ulnaris
50
Which muscles extend the medial four digits?
- Extensor digitorum - Extensor indicis - Extensor digiti minimi
51
What are the actions of extensor digitorum?
Extensor of the fingers and wrist
52
Name the muscles that extend or abduct the thumb
- Abductor pollicis longus - Extensor pollicis brevis - Extensor pollicis longus
53
Which nerve innervates all the muscles in the posterior compartment of the forearm?
Radial
54
What is the nerve supply to the supinator muscle?
Radial nerve - deep branch
55
Which carpal bones can be felt in the anatomical snuff box?
Scaphoid and trapezium
56
Which artery lies on the floor of the snuff box?
Radial
57
What is the action of the EPL and EPB muscles?
Extension of the thumb
58
What is the action of the APL muscle?
Abduction of the thumb
59
Which muscles attach to the extensor hood of the hand?
Lumbricals, dorsal interossei and extensor digitorum
60
What is the innervation of the EPL, EPB and APL muscles of the thumb?
Radial

Musculo-skeletal (27 decks)

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