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MSK - Final > 10/10 Hand - Brauer (Completed) > Flashcards

10/10 Hand - Brauer (Completed) Flashcards

1
Q

What does the palmar longus m. Insert into?

A

Palmar aponeurosis

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2
Q

What is Dupuytren’s Contracture? 5

A

Thickening of fibrous tissue underneath skin of palm

Correlated w/ alcohol, aging, diabetes

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3
Q

How is opposition of the hand performed? 7

A

Touching the thumb to the pinkie finger

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4
Q

Which tendons are covered by synovial sheaths within the hand?

A

Flexor digitorum superficialis m.

Flexor digitorum profundus m.

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5
Q

What is the 5th digital synovial sheath of the hand continuous with? 8

A

The Ulnar bursa

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6
Q

What are the intrinsic muscles of the hand? 9

A

Hey There Lady Palms Down

Hypothenar muscles
Thenar muscles
Lumbrical muscles
Palmar interosseous muscles
Dorsal interosseous muscles
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7
Q

When discussing the hand where is the midline? 9

A

Middle finger

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8
Q

Where does the Abductor pollicis brevis m. originate from and insert into? What innervates it? What is its action? 10

A

Thenar group

Origin:
Flexor retinaculum
Scaphoid tubercle
Trapezium tubercle

I —> proximal phalanx of thumb

N —> recurrent branch of median n.

Action:
Abducts thumb
Aids in opposition (thumb to pinkie)

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9
Q

Where does the Opponens pollicis m. originate from and insert into? What innervates it? What is its action?

A

Thenar group

Origin:
Flexor retinaculum

I —> 1st metacarpal

N —> recurrent branch of median n.

Action:
Oppose thumb
Rotate medially

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10
Q

Where does the Flexor pollicis brevis superficial head m. originate from and insert into? What innervates it? What is its action?

A

Origin:
Flexor retinaculum
Tubercle of trapezium

I —> proximal phalanx of thumb (lat. side of the base)

N —> recurrent branch of median n.

A —> flexes thumb

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11
Q

Where does the Flexor pollicis brevis deep head m. originate from and insert into? What innervates it? What is its action?

A

Thenar group

Origin:
Trapezoid
Capitate

I —>proximal phalanx of thumb (lateral side)

N —> deep branch of ulnar n.

A —>flexes thumb

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12
Q

Where does the adductor pollicis oblique head m. originate from and insert into? What innervates it? What is its action?

A

Origin:
Capitate
2nd metacarpal
3rd metacarpal

I —> proximal phalanx of thumb

N —> deep ulnar n.

A —> adducts thumb

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13
Q

Where does the Adductor pollicis transverse head m. originate from and insert into? What innervates it? What is its action?

A

Origin:
Palmar ridge of 3rd metacarpal

I —> tendon of oblique head

N —> deep ulnar n.

A —> adducts thumb

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14
Q

Where does the Abductor digiti minimi m. originate from and insert into? What innervates it? What is its action?

A

Hypothenar group

O —> pisiform

I —> proximal phalanx of 5th digit

N —> ulnar n.

Action:
Abducts fifth digit
Assists flexion

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15
Q

Where does the Flexor digiti minimi brevis m. originate from and insert into? What innervates it? What is its action?

A

Hypothenar group

Origin:
Hook of hamate
Flexor retinaculum

I —> proximal phalanx of 5th digit

N —> ulnar n.

A —> flexes proximal phalanx of 5th digit

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16
Q

Where does the Opponens digiti minimi m. originate from and insert into? What innervates it? What is its action?

A

Hypothenar group

Origin:
Hook of hamate
Flexor retinaculum

I —> medial 5th metacarpal

N —> ulnar n.

A —> brings opposition to thumb

17
Q

Where does the Lumbricals m. originate from and insert into? What innervates it? What is its action? 14

A

Deep Intrinsic group

O —> flexor digitorum profundus m.

I —> side of extensor hood

Nerve:
1 and 2 —> median n.
3 and 4 —> deep branch of ulnar n.

Actions:
Flexes MCP joint
Extends PIP joint
Extends DIP joint

18
Q

Where does the Palmar interosseous m. originate from and insert into? What innervates it? What is its action? 17

A

Deep Intrinsic muscles

O —> 2, 4, 5th metacarpals (palmar surface)

I —> proximal phalanges

N —> Deep ulnar n.

A —> pAD
\

19
Q

Where does the Dorsal interosseous m. originate from and insert into? What innervates it? What is its action?

A

Deep Intrinsic group

O —> adjacent side of two metacarpals

I —> proximal phalanges

N —> deep ulnar n.

A —> dAB (extensor hood expansion)

20
Q

On the palmar hand, how does the radial a. Branch? 18

A

Radial a. descends along the radius on the poster side

At the head of the radius the radial a. Gives off a superficial palmar branch of the radial a.

The radial a. Crosses over the top of the proximal phalanx where it branches into:
Deep palmar arch a.
Princeps pollicis a. —> radialis indicis a.

21
Q

On the palmar hand, how does the Ulnar a. Branch? 18

A

Ulnar a. Feeds into the superficial palmar arch a. At the wrist (just as the radial a. Does)

22
Q

Once the radial a. And the ulnar a. Feed into the superficial palmar arch what happens next? 18

A

Superficial palmar arch a. Feeds into the common palmar digital a. Which terminally feeds into the proper palmar digital arteries

23
Q

What is the superficial palmer arch? 19

A

add

24
Q

What is the deep palmar arch? 20

A

add

25
Q

What forms the dorsal carpal arch? 21

A

the radial artery joins with the anterior interosseous artery

26
Q

What innervates the 4th and fifth digit dorsal side?

A

ulnar n.

27
Q

What innervates most o fthe thumb, 2nd, and 3rd digit dorsal side?

A

radial n.

28
Q

What innervates most of the palmar hand? 22

A

median n.

29
Q

In general, what innervates the thenar eminence?

A

recurrent branch of median n.

30
Q

In general, what innervates the hypothenar eminence?

A

deep branch of ulnar n.

31
Q

What type of innervation is found on the dorsum of the hand? 25

A

sensory only

32
Q

In terms of general musculature what is missing from the dorsum of the hand? 25

A

There are no intrinsic muscles

MSK - Final (23 decks)

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