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Anatomy > Chapter 47 > Flashcards

Chapter 47 Flashcards

1
Q

The ____ is the portion of the upper limb distal to the forearm.

A

hand

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2
Q

What is the ball of the thumb?

A

Thenar

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3
Q

What is the ball of the little finger?

A

Hypothenar

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4
Q

What is the name for digit 1?

A

thumb (pollex)

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5
Q

How many carpal bones are in the hand?

A

8 carpal bones- arranged in 2 rows

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6
Q

From lateral to medial what are the carpal bones of the proximal row?

A

Scaphoid (closest to thumb)
Lunate
Triquetrum
Pisiform

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7
Q

From lateral to medial what are the carpal bones of the distal row?

A

Trapezium (closest to thumb)
Trapezoid
Capitate
Hamate

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8
Q

What is a triangular connective tissue membrane between the subcutaneous tissue of the palm that the tendons of the palm?

A

palmar aponeurosis

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9
Q

What is the apex of the palmar aponeurosis?

A

insertion of the palmaris longs muscle (when present)

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10
Q

What is the apex of the palmar aponeurosis fused with?

A

the underlying flexor retinaculum

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11
Q

The base of the palmar aponeurosis attaches via pretendinous bands of what?

A

The fibrous digital sheaths of digits 2-5.

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12
Q

The palmar aponeurosis serves as the origin of what?

A

The subcutaneous palmaris brevis muscle

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13
Q

What is a transverse fibrous structure anterior to the carpals?

A

flexor retinaculum

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14
Q

What are the lateral attachments of the flexor retinaculum?

A

scaphoid and trapezium

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15
Q

What are the medial attachments of the flexor retinaculum

A

pisiform, triquetrum and the hook of the hamate.

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16
Q

The flexor retinaculum converts the arch of the carpal bones into what?

A

the carpal canal

17
Q

What are the 9 long tendons that are retained in the carpal canal?

A

4 tendons of flexor digitorum superficialis
4 tendons of flexor digitorum profundus
1 tendon of flexor pollicis longus

18
Q

What are the 2 bursae that are contained in the carpal canal?

A

ulnar bursa and radial bursa

19
Q

What does the ulnar bursa surround?

A

The 8 tendons of flexor digitorum superficials and flexor digitorum profundus

20
Q

What does the radial bursa surround?

A

1 tendon of flexor pollicis longus

21
Q

What nerve lies in the carpal canal?

A

Median nerve

Anatomy (13 decks)

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