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My cards > ANAT: Palm of the Hand > Flashcards

ANAT: Palm of the Hand Flashcards

1
Q

Carpal bones (proxolateral to distomedial)

A

Proximal row: Scaphoid, Lunate, Triquetral, Pisiform

Distal row: Trapezium, Trapezoid, Capitate, Hamate

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2
Q

Flexor retinaculum attachments

A

Medial: pisiform and Hook of Hamate
Lateral: Tubercles of Scaphoid and Trapezium

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3
Q

Contents of carpal tunnel proper

A

Tendons: flexor digitorum superficialis, flexor digitorum produndus, flexor pollicis longus
Median n.

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4
Q

Palmaris Brevis ORIGIN

A

medial palmar aponeurosis and flexor retinaculum

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5
Q

Palmaris Brevis INSERTION

A

skin of the medial palm

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6
Q

Palmaris Brevis ACTION

A

wrinkles the skin of the medial palm

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7
Q

Palmaris Brevis INNERVATION

A

Superficial branch of the Ulnar n.

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8
Q

Dupuytren’s contracture

A

Pathological fibrosus and shortening of the palmar aponeurosis or logitudinal digital bands creating traction of the fibrous digital sheaths resulting in flexure deformity of the digits (IV-V)

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9
Q

Common flexor synovial sheath (Ulnar bursa)

A

Common sheath enveloping tendons of the flexor digitorum superficialis and flexor digitorum profundus
-continuous distally with the digital synovial sheath of digit V

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10
Q

Synovial sheath of Flexor pollicis longus (radial bursa)

A

Lateral to the common synovial flexor sheath, continues distally with the digital synovial sheath of the thumb

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11
Q

Digital synovial sheaths

A

Envelop flexor tendons within the digital tunnels
-Synovial sheaths of digits II-IV terminate proximally at metacarpal mid-shaft, but digital sheaths of digits I and V are continuous with radial and ulnar bursae

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12
Q

Thenar muscles

A

Opponens pollicis, abductor pollicis brevis, flexor pollicis brevis

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13
Q

Thenar muscle [N]

A

Recurrent branch of the median n.

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14
Q

Thenar muscle [O]

A

Flexor retinaculum and bony attachments (pisiform, Hook of Hamate, and tubercles of Scaphoid and Trapezium)

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15
Q

Abductor pollicis brevis INSERTION

A

Base of proximal phalanx of the thumb

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16
Q

Abductor pollicis brevis [A]

A

Abducts the thumb

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17
Q

Flexor pollicis brevis [I]

A

Base of the proximal phalanx of the thumb

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18
Q

Flexor pollicis brevis [A]

A

Flexes CM and MP joints of the thumb

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19
Q

Opponens pollicis [I]

A

Lateral shaft of metacarpal 1

20
Q

Opponens pollicis [A]

A

Opposes the thumb

21
Q

Hypothenar muscles

A

Abductor digiti minimi, Flexor digiti minimi, Opponens digiti minimi

22
Q

Hypothenar muscle [O]

A

Flexor retinaculum and attachments

23
Q

Hypothenar muscle [N]

A

Deep branch of the ulnar n.

24
Q

Abductor digiti minimi [I]

A

Medial base of the proximal phalanx of digit V

25
Q

Abductor digiti minimi [A]

A

Abducts digit V

26
Q

Flexor digiti minimi [I]

A

base of proximal phalanx of digit V

27
Q

Flexor digiti minimi [A]

A

Flexes MP joint of digit V

28
Q

Opponens digiti minimi [I]

A

Shaft of metacarpal V

29
Q

Opponens digiti minimi [A]

A

oppose digit V

30
Q

Adductor pollicis [O]

A

Transverse head: Shaft of metacarpal III

Oblique head: Capitate and bases of metacarpals II-III

31
Q

Adductor pollicis [I]

A

Medial base of proximal phalanx of the thumb

32
Q

Adductor pollicis [N]

A

Deep branch of the Ulnar n.

33
Q

Adductor pollicis [A]

A

Adducts and flexes the thumb

34
Q

Palmar interosseous muscles [O]

A

Shafts of metacarpals II, IV, and V

35
Q

Palmar interosseous muscles [I]

A

Extensor expansions of digits II, IV, and V

36
Q

Palmar interosseous muscles [A]

A

Adduction, flexion of MP joints; extension of DIP and DIP joints

37
Q

Palmar interosseous muscles [N]

A

Deep branch of the Ulnar n.

38
Q

Dorsal interosseous muscles [O]

A

bipennate muscles originating from adjacent metacarpal shafts

39
Q

Dorsal interosseous muscles [I]

A

proximal phalangeal bases and extensor expansions of of digits II-IV

40
Q

Dorsal interosseous muscles [A]

A

abduction, flexion of the MP joints; extension of PIP and DIP joints

41
Q

Dorsal interosseous muscles [N]

A

Deep branch of the Ulnar n.

42
Q

Lumbricals [O]

A

Tendons of flexor digitorum profundus m.

43
Q

Lumbricals [I]

A

Lateral side of extensor expansions digits II-IV

44
Q

Lumbricals [A]

A

Adduction of digits IV-V, abduction of digits II-III; Flexion of MP joints, extension of PIP and DIP joints

45
Q

Lumbricals [N]

A

Lumbricals 1 and 2 by the median n.

Lumbricals 3 and 4 by the deep branch of the ulnar n.

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