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Advanced Anatomy > Lecture 6: Flexor Forearm & Hand > Flashcards

Lecture 6: Flexor Forearm & Hand Flashcards

1
Q

Where do most anterior (flexor) muscles originate?

A

Common flexor tendon on medial epicondyle

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2
Q

What nerves innervate most muscles of anterior compartment of forearm?

A

Median N

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3
Q

What innervates the FCU

A

Ulnar N

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4
Q

What innervates FDP

A

Ulnar N

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5
Q

What are the superficial muscles of the anterior forearm?

A

Flexor Carpi Radialis
Flexor Carpi Ulnaris
Flexor Digitorum Superficialis
Pronator Teres
Palmaris Longus

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6
Q

What is the function of the FCR

A

Flex + ABDuct wrist

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7
Q

What is the function of the FCU

A

Flex + ADDuct wrist

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8
Q

What is the function of the FDS

A

Flex wrist + digits

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9
Q

What is the function of pronator teres

A

Pronate

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10
Q

Palmaris longus function

A

Flex wrist

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11
Q

What are the deep muscles of forearm (ant)

A

Flexor pollicis longus
Flexor digitorum profundus
Pronator quadratus

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12
Q

FPL function

A

Flex thumb

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13
Q

FDP function

A

Flex wrist + Digits

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14
Q

Pronator Quadratus function

A

Pronates

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15
Q

Describe the vasculature of the forearm

A

Ulnar & Radial A

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16
Q

Ulnar Artery and its subdivisions

A

Ulnar A –> Common interosseous A –> Anterior Interosseous –> Posterior interosseous

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17
Q

Does the median N travel through the carpal tunnel?

A

yes!

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18
Q

What two muscles does the median N not supply in ant forearm?

A

FCP, Medial 1/2 FDP

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19
Q

What are the branches of median nerve?

A

Anterior interosseous N + Palmar cutaneous branch (over Flexor Ret.)

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20
Q

Where does the Ulnar N run in the forearm?

A

Behind medial epicondyle, along ulna, to hand

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21
Q

What does the ulnar N supply in forearm?

A

-FCU, medial 1/2 FDP

22
Q

What type of joint is the radiocarpal jt?

A

Condylooid (ellipsoid) synovial joint

23
Q

What are the movements of the wrist joint with the intercarpal joint?

A

Full ROM - flexion, extension, ADDuction, ABDuction, circumduction

24
Q

What is deep to the flexor retinaculum?

A

Carpal Tunnel

25
Q

What are the lateral attachements of the flexor retinaculum?

A

-Scaphoid
-Trapezium

26
Q

What are the medial attachments of the flexor retinaculum?

A

-Pisiform
-Hamate

27
Q

What are the contents of the carpal tunnel?

A

Flexor digitorum superficialis & profundus
Flexor pollicis longus
Median N

28
Q

Does the Radial N & A travel in the carpal tunnel?

29
Q

Does the Ulnar N & Artery travel in the carpal tunnel

30
Q

Does the palmar cutaneous branch of median N travel through carpal tunnel?

31
Q

What forms the floor of the anatomical snuff box?

A

Scaphoid bone

32
Q

Where does the radial A travel in the wrist region?

33
Q

What tendons bound the anatomical snuff box?

A

-ABDuctor pollicis longus
-Extensor pollicis brevis
-Extensor pollicis longus

34
Q

What is a triangular-shaped thickening of deep fascia on the palm?

A

Palmar Aponeurosis

35
Q

What is the function of the palmar aponeurosis?

A

Provide a firm attachement to skin and this improve grip
Structure protection

36
Q

What are the compartments of the hand?

A

-Thenar
-Central
-Hypothenar

37
Q

What are the muscles around the metacarpals (compartment)?

A

Interosseous compartment

38
Q

What are the 3 muscles of the thenar compartment?

A

-Flexor pollicis brevis
-ABDuctor pollicis brevis
-Opponens pollicis

39
Q

What innervates the thenar compartment?

A

Recurrent branch - Median N

40
Q

What are the 3 muscles of the hypothenar compartment?

A

Flexor digiti minimi
ABDuctor digiti minimi
Opponens digiti Minimi

41
Q

What is the innervation of the hypothenar compartment?

A

Deep branch of ulnar N

42
Q

What is found in the central compartment?

A

FDS amd FDP tendons
Lumbricals
Superficial and deep palmar arteries
branches of median and ulnar N

43
Q

What are the muscles of the interosseous compartment?

A

-ADDuctor pollicis
-Palmar interossei
-Dorsal interossei

44
Q

Muscles of the interosseous compartment are innervated by

A

Deep branch of Ulnar N

45
Q

Function of lumbrical and interossei muscle

A

Flex the MP joints + extend the PIP and DIP joints

46
Q

What is the innervation of the lateral 2 lumbricals?

47
Q

What is the innervation of the medial 2 lumbricals?

A

Deep branch of ulnar N

48
Q

Innervation of palmar interossei

A

Deep branch of ulnar N

49
Q

Function of palmar interossei

A

ADduct the fingers

50
Q

Innervation of dorsal interossei

A

Deep branch of ulnar N

51
Q

Function of Dorsal interossei

A

ABduct fingers

52
Q

The superficial palmar arch is formed primarily from the _________ artery. The deep palmar arch is formed by the _________ artery.

A

Ulnar; Radial

Advanced Anatomy (18 decks)

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