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ELM2 > Upper limb muscles > Flashcards

Upper limb muscles Flashcards

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1
Q

What muscle(s) are in the anterior compartment of the arm

A

Biceps brachii
Brachialis
Coracobrachialis

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2
Q

What muscle(s) are in the posterior compartment of the arm

A

Triceps brachii

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3
Q

What nerve supplies the anterior compartment of the arm

A

Musculocutaneous nerve

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4
Q

Where do the long and short heads of the biceps brachii attach

A

Long: supraglenoid tubercle
Short: coracoid process

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5
Q

Where does the biceps brachii attach distally

A

Tendon: radial tuberosity
Aponeurosis: Deep fascia

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6
Q

What is the action of the biceps brachii

A

Elbow flexion, forearm supination

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7
Q

Where does the brachialis attach proximally

A

Anterior distal half of humeral shaft

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8
Q

Where does the brachialis attach distally

A

Ulnar tuberosity

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9
Q

What is the action of the brachialis

A

Elbow flexion

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10
Q

Where does the coracobrachialis attach proximally

A

Coracoid process

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11
Q

Where does the coracobrachialis attach distally

A

Shaft of humerus

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12
Q

What is the action of the coracobrachialis

A

Shoulder flexion

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13
Q

Where do the heads of triceps brachii attach

A

Long head: infraglenoid tubercle of scapula
Medial and lateral heads: posterior shaft of humerus

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14
Q

Where does the triceps brachii distally attach

A

Olecranon process of the ulna

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15
Q

What is the action of the triceps brachii

A

Elbow extension

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16
Q

What nerve innervates the posterior compartment of the arm

A

Radial nerve

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17
Q

What are the superficial anterior compartment muscles of the forearm (5)

A

Pronator teres, flexor carpi radialis, palmaris longus, flexor digitorum superficialis, flexor carpi ulnaris

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18
Q

What are the deep anterior compartment muscles of the forearm (3)

A

Flexor pollicis longus, flexor digitorum profundus, pronator quadratus

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19
Q

What are the superficial posterior compartment muscles of the forearm (7)

A

Brachioradialis, extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, extensor carpi ulnaris, aconeus

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20
Q

What are the deep posterior compartment muscles of the forearm (5)

A

Supinator, extensor indicis, extensor pollicis longus, extensor pollicis brevis, abductor pollicis longus

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21
Q

What superficial anterior compartment muscle of the forearm is absent in some individuals

A

Palmaris longus

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22
Q

What superficial anterior compartment muscle is considered as an intermediate layer

A

Flexor digitorum superficialis

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23
Q

Where do all of the superficial anterior compartment muscles of the forearm attach

A

Medial epicondyle of the humerus

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24
Q

Where does the pronator teres distally attach

A

Shaft of radius

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25
What is the action of the pronator teres
Pronation
26
Where does the flexor carpi radialis distally attach
2nd & 3rd metacarpal bases
27
What is the action of the flexor carpi radialis
Wrist flexion and radial deviation
28
Where does the palmaris longus attach distally
Palma aponeurosis
29
What is the action of the palmaris longus
Wrist flexion
30
What is the distal attachment of the flexor digitorum superficialis
Middle phalanges of the 2nd-5th fingers
31
What is the action of the flexor digitorum superficialis
Flexion of the proximal interphalangeal joints
32
What is the distal attachment of the flexor carpi ulnaris
5th metacarpal base
33
What is the action of the flexor carpi ulnaris
Wrist flexion, radial deviation
34
What muscles of the anterior superficial muscles are innervated by the median nerve
Pronator teres, flexor carpi radialis, palmaris longus, flexor digitorum superficialis
35
What muscles of the anterior superficial muscles are innervated by the ulnar nerve
Flexor carpi ulnaris
36
What is the proximal attachment of the flexor digitorum profundus
Ulna shaft and interosseous membrane
37
What is the distal attachment of the flexor digitorum profundus
Base of the distal phalanges
38
What is the action of the flexor digitorum profundus
Flexion of distal interphalangeal joints
39
What is the proximal attachment of the flexor pollicis longus
Radius shaft and interosseous membrane
40
What is the distal attachment of the flexor pollicis longus
Base of the distal phalange of the thumb
41
What is the action of flexor pollicis longus
Flexion of the metacarpophalangeal and interphalangeal joints of the thumb
42
What is the proximal and distal attachment of the pronator quadratus
Distal shaft of radius and ulna
43
What is the action of the pronator quadratus
Pronation
44
What innervates the flexor digitorum profundus
Lateral half: median nerve Medial half: ulnar nerve (ring finger split in half)
45
What innervates the flexor pollicis longus and pronator quadratus
Median nerve
46
What innervates the superficial muscles of the posterior compartment of the forearm
Radial nerve
47
What is the proximal attachment of the brachioradialis and extensor carpi radialis longus
Lateral supracondylar ridge (humerus)
48
What is the distal attachment of the brachioradialis
Styloid process of the radius
49
What is the distal attachment of the extensor carpi radialis longus
2nd metacarpal base
50
What is the proximal attachment of the extensor carpi radialis brevis, extensor carpi ulnaris, extensor digitorum, extensor digit minimi
Lateral epicondyle of the humerus
51
What is the distal attachment of the extensor carpi radialis brevis
2nd and 3rd metacarpal base
52
What is the distal attachment of the extensor carpi ulnaris
5th metacarpal base
53
What is the distal attachment of the extensor digitorum
Bases of middle and distal phalanx of 2nd-5th fingers (via extensor hood)
54
What is the distal attachment of the extensor digiti minimi
Bases of middle and distal phalanx of 2nd-5th fingers (via extensor hood)
55
What is the proximal and distal attachment of the anconeus
Lateral epicondyle of humerus, olecranon and proximal ulna
56
What is the action of the extensor carpi radialis longus
Wrist extension and radial deviation- abduction
57
What is the action of the extensor carpi radialis brevis
Wrist extension and radial deviation- abduction
58
What is the action of the extensor carpi ulnaris
Wrist extension and ulnar deviation- adduction
59
What is the action of the extensor digitorum
Finger extension, wrist extension
60
What is the action of the extensor digiti minimi
Little finger extension
61
Where does the supinator attach proximally
Lateral epicondyle and ulna
62
Where does the supinator attach distally
Radius proximal shaft
63
Where does the abductor pollicis longus attach proximally
Ulna, radius and interosseous membrane
64
Where does the abductor pollicis longus attach distally
Base of first metacarpal
65
Where does the extensor pollicis brevis attach proximally
Radius and interosseous membrane
66
Where does the extensor pollicis brevis attach distally
Base of proximal phalanx of thumb
67
Where does the extensor pollicis longus attach proximally
Ulna and interosseous membrane
68
Where does the extensor pollicis longus attach distally
Base of distal phalanx of thumb
69
Where does the extensor indicis attach proximally
Ulna and interosseous membrane
70
Where does the extensor indicis attach distally
Extensor hood of index finger
71
What is the action of the adductor pollicis longus
Adduction of the thumb
72
What is the action of the extensor pollicis brevis
Extend the thumb
73
What is the action of the extensor pollicis longus
Extend the thumb
74
What is the action of the extensor indicis
Extension of the index finger
75
Which tendons form the anatomical snuff box
Abductor pollicis longus and extensor pollicis brevis form the lateral border, and the extensor pollicis longus form the posterior border
76
What is the extensor hood made of
Central band attaching to middle phalanx, lateral bands attach to base of distal phalanx

ELM2 (1 decks)

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