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Year 2 Collin > Anatomy Limbs 4 - Hand > Flashcards

Anatomy Limbs 4 - Hand Flashcards

1
Q

Where does the palmar aponeurosis extend from?

A

The flexor retinaculum

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2
Q

What are the borders of the septa of the hand

A

Septa extends from palmar aponeurosis to little finger metacarpal (medially) and middle finger metacarpal (laterally)

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3
Q

On the forearm, pronators and flexors are ?

A

Anterior

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4
Q

On the forearm, extensors and supinators are?

A

Posterior

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5
Q

What muscles are in the superficial anterior compartment of the forearm?

A
  1. Pronator teres
  2. Flexor carpi radialis
  3. Palmaris longus
  4. Flexor carpi ulnaris
  5. Flexor digitorum superficialis
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6
Q

What muscles are in the deep anterior compartment of the forearm?

A
  1. Flexor digitorum profundus
  2. Flexor pollicis longus
  3. Pronator quadratus
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7
Q

What are the groups of intrinsic muscles of the hand?

A
  1. Thenar muscles
  2. Adductor muscle
  3. Hypothenar muscles
  4. Interossei and lumbricals
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8
Q

What muscles form the thenar muscles

A
  1. Abductor pollicis brevis
  2. Flexor pollicis brevis
  3. Opponens pollicis
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9
Q

What muscle forms the adductor muscle

A

Adductor pollicis

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10
Q

What muscle forms the hypothenar muscles

A
  1. Abductor digiti minimi
  2. Flexor digiti minimi
  3. Opponens digiti minimi
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11
Q

What do lumbricals do?

A

Flex MCPS, extend IPJs

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12
Q

What do palmar interossei do?

A

Adduct digits

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13
Q

What do dorsal interossei do?

A

Abduct the digits

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14
Q

In thumb movements, which movements have a long and short muscle acting?

A

Abduction (APL /APB)

Extension (EPL / EPB / APL)

Flexion (FPL/FPB)

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15
Q

“Pollicis” muscles are supplied by which nerve?

A

Ulnar

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16
Q

Thenar muscles are supplied by which nerve?

A

Median nerve

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17
Q

Lumbricals extend from the palmar region to the dorsal region

A

Y

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18
Q

Describe what PAD and DAB refers to?

A

PAD = Palmar interossei ADDUCT (thumb and little finger have their0 own adductors)

DAB = Dorsal interossei ABDUCT (there is no dorsal interossei by the thumb because the thumb has its own abductor)

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19
Q

Explain the path of the flexor digitorum profundus and superficialis

A

FDP and FDS tendons pass underneath carpal tunnel beneath flexor retinaculum

Enters common synovial sheath then common digital sheath

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20
Q

Does the thumb have its own sheath?

A

Y

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21
Q

The fibrous digital sheath consists of 2 parts, which are?

A

Annular and cruciform

22
Q

FDP and FDS, which one runs further?

A

FDP goes more distally, to the distal phalanx

FDS goes more proximally to the middle phalanx

23
Q

What does the extensor expansion also attach to?

A

The lumbrical

24
Q

Which muscles are involved in radial deviation?

A

APL, FCR, ECRB, ECRL

25
Q

Which intercarpal joint articulates with the triquetrium but not the wrist?

A

Pisiform (it is a sesamoid bone)

26
Q

Lateral to medial, proximal row mnemonic for the intercarpal bones?

A

Some lovers try positions that they can’t handle

Scaphoid, lunate, triquetrium, pisiform

Trapezium, trapezoid, capitate, hamate

27
Q

What do metacarphophalangeal joints do?

MCP

A
  1. Flexion and extension
  2. Abduction and adduction
  3. Ulnar collateral ligament of the thumb
28
Q

What do interphalangeal joints do?

IPJ

A
  1. Flexion and extension only
29
Q

In the hand, there are palmar arches which anastomose with?

A

Deep arches

30
Q

The basilic vein join which structures to form axillary vein in the arm?

A

Venae comitantes

31
Q

Cephalic vein joins the axillary vein where?

A

In the axilla

32
Q

Where does superficial venous return of the hand begin?

A

Dorsal venous arch (network)

33
Q

Which nerve supplies all of the posterior muscles of the forearm?

A

Radial nerve

34
Q

Which nerve is the main nerve of the anterior compartment of the forearm?

A

Median nerve

35
Q

What does the ulnar nerve supply?

A

Main nerve of hand, also supplies FCU and ulnar Half of FDP

36
Q

What is the median nerve motor to?

A

Thenar muscles (APB, FPB, OP) and lumbricals 1 and 2

37
Q

What is the median nerve sensory to?

A

Palmar surface of the thumb, IF, MF, and half of RF

38
Q

How does the ulnar nerve enter the hand?

A

Over the flexor retinaculum (lateral to pisiform)

39
Q

The ulnar nerve divides into the superficial and deep branch. What is the superficial branh sensory to?

A

Palmar surfaces of LF and half of RF

40
Q

What is the deep branch of the ulnar nerve motor to?

A
  1. Hypothenar muscles
  2. Adductor pollicis
  3. Lumbricals 3 and 4
  4. All interossei
41
Q

Where does the radial nerve divide into the deep branch and superficial branch?

A

Just above the level of the elbow

42
Q

What does the deep branch of the radial nerve become?

A

Posterior interesses nerve (motor)

43
Q

What does the superficial branch of the radial nerve become?

A

Superficial radial nerve

44
Q

Does the radial nerve have any motor supply in the hand?

A

NO

45
Q

Which nerve gives sensory supply to the dorsum of the hand?

A

Radial nerve

46
Q

Which carpal bones have bony attachment for the flexor retinaculum?

A

Scaphoid, trapezium, pisiform, hamate

47
Q

What does the carpal tunnel contain?

A
  1. Median nerve
  2. FPL tendon
  3. 4 tendons of FDP
  4. 4 tendons of FDS
48
Q

What muscles does the power grip involve?

A
  1. Long flexors of finger and thumb
  2. Intrinsic muscles of palm
  3. Extensors of wrist joint
49
Q

What muscles does the precision grip involve?

A
  1. Wrist & fingers held in place by long flexors and extensors
  2. Intrinsic muscles of hand carry out fine movements
50
Q

What muscles are mainly involved in the hook grip

A

Long flexors of the digits

Year 2 Collin (114 decks)

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