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anatomy > muscles of the forearm + hand > Flashcards

muscles of the forearm + hand Flashcards

(47 cards)

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1
Q

The muscles in the anterior compartment of the forearm are all … + …

A

Flexors, pronators

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2
Q

The majority of the muscles of the anterior compartment of the forearm originate from the … tendon, which is located in the … of the humerus

A

Common flexor tendon, medial epicondyle

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3
Q

The pronator teres originates in the … + the …

A

Medial epicondyle, ulna

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4
Q

Name the nerve that passes through the two heads of the pronator teres

A

Median nerve

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5
Q

The pronator teres inserts into …

A

The intermediate region (anteriorly) of the radius

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6
Q

The flexor carpi radialis originates in… + inserts in…

A

Common flexor tendon, base of the 2. metacarpal

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7
Q

Functions of the flexor carpi radialis

A

Wrist flexion

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8
Q

The palmaris longus originates in… + inserts in…

A

Common flexor tendon, palmar aponeurosis + flexor retinaculum

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9
Q

The flexor carpi ulnaris originates in… + inserts in…

A

Medial epicondyle + the dorsum of the ulna, pisiform

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10
Q

Nerve that passes through the flexor carpi ulnaris

A

Ulnar nerve

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11
Q

Functions of the flexor carpi ulnaris

A

Flexion + ulnar deviation of the wrist

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12
Q

Name the structures that pass through the carpal tunnel

A

Tendons of flexor digitorum superficialis + profundus, flexor pollicis longus + median nerve

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13
Q

The flexor digitorum superficialis inserts into…

A

The base of the middle phalanx

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14
Q

The FDS of the forearm allows for…

A

Proximal interphalangeal flexion

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15
Q

Muscle that is innervated by the median + ulnar nerve (medial 1/2 by the ulnar, lateral 1/2 by the median)

A

Flexor digitorum profundus

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16
Q

The flexor digitorum profundus originates in… + … and inserts in…

A

Ulna + interosseous membrane, distal phalanges of 2. to 5. digits

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17
Q

Name the muscle that originates on the surface of the radius, lateral to the flexor digitorum profundus + inserts into the distal phalanx of the thumb

A

Flexor pollicis longus

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18
Q

The anterior interosseous nerve + vessels pass into the hand in between 2 muscles. Name them.

A

Flexor pollicis longus + flexor digitorum profundus

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19
Q

The pronator quadratus originates in the distal region of the forearm + runs from the … to the …

20
Q

The brachioradialis originates in… + inserts in…

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A

Lateral supracondylar ridge of the humerus, styloid process of radius

21
Q

In the proximal region of the forearm, the brachioradialis encloses a nerve in between itself + a muscle. Name the nerve + the muscle.

Study These Flashcards
A

Radial nerve, brachialis muscle

22
Q

In the forearm, the brachioradialis covers 2 very important structures.
Name them.

Study These Flashcards
A

Radial artery + superficial branch of radial nerve

23
Q

The extensor digitorum originates in… + inserts into…

Study These Flashcards
A

Common extensor tendon, middle + distal phalanges of the fingers (2 to 5)

24
Q

The extensor digiti minimi originates in… + inserts in…

Study These Flashcards
A

Common extensor tendon, phalanges of 5. finger

25
The extensor carpi ulnaris runs from... to...
Common extensor tendon, base of the 5. metacarpal
26
The supinator of the forearm originates in... + inserts in...
Ulna (supinator crest) + humerus (epicondyle), surrounds the head of the radius + inserts into it laterally
27
The abductor pollicis longus originates in... + inserts in...
Posterior surface of the ulna, base of the 1. metacarpal
28
The extensor pollicis brevis originates in... + inserts in...
Posterior surface of the radius, distal to the abductor, proximal phalanx of 1. finger
29
The extensor pollicis longus originates in... + inserts in...
Back of the ulna, distal phalanx
30
The extensor indicis runs from... to...
The radius to the phalanges of the index finger
31
Explain which tendons pass thorugh which part of the extensor compartment
I. Abductor pollicis longus + extensor pollicis brevis II. Extensor carpi radialis (brevis + longus) III. Extensor pollicis longus IV. Extensor digitorum + indicis V. Extensor digiti minimi VI. Extensor carpi ulnaris
32
The extensor carpi radialis originates in... + inserts in...
It has 2 heads, one originating in the medial epicondyle + the other one in the radius, inserts into the base of the 3. (brevis) + 2. (longus) metacarpals
33
Name the muscles of the thenar eminence
Flexor pollicis brevis, abductor pollicis brevis + opponens pollicis
34
The thenar muscles insert into the region of the ..., ... + ...
Scaphoid tubercle, trapezium + flexor retinaculum
35
The muscles of the thenar eminence are all innervated by the ... nerve
Median
36
The lumbrical muscles arise from the tendons of the ... + insert into the ...
Flexor digitorum profundus, extensors
37
Describe the pattern of innervation of the 4 lumbrical muscles
The 2 medial ones are innervated by the ulnar nerve + the 2 lateral ones by the median nerve
38
The lumbrical muscles allow for ... flexion with ... extension
Metacarpophalangeal flexion, interphalangeal extension
39
How many palmar interosseous muscles do we have?
3
40
The palmar interosseous muscles act on 3 fingers. Name them + the function of the muscles
2.,4. + 5. | They all adduct
41
How many dorsal interosseous muscles do we have?
4
42
On which fingers do the dorsal interosseous muscles act? Name them + the function of the muscles
2., 3. + 4. | They all abduct
43
Name the function of the interosseous muscles (hand)
Metacarpophalangeal flexion with interphalangeal extension + ab/adduction
44
The interosseous muscles are ALL innervated by the ... nerve
Ulnar
45
Name the muscles of the hypothenar eminence
Abductor digiti minimi, flexor digiti minimi brevis, opponens digiti minimi
46
The muscles of the hypothenar eminence all insert into the region of ..., ... + ...
The pisiform, hook of the hamate + flexor retinaculum
47
The dorsal digital expansion of the hand is formed by the conjunction of...
- the common extensor tendons (+ proper in the case of the 2. + 5. digits) - the tendons of the interosseous muscles - the tendons of the lumbrical muscles (on the radial side)

anatomy (23 decks)

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