Chapter 47 Flashcards
The ____ is the portion of the upper limb distal to the forearm.
hand
What is the ball of the thumb?
Thenar
What is the ball of the little finger?
Hypothenar
What is the name for digit 1?
thumb (pollex)
How many carpal bones are in the hand?
8 carpal bones- arranged in 2 rows
From lateral to medial what are the carpal bones of the proximal row?
Scaphoid (closest to thumb)
Lunate
Triquetrum
Pisiform
From lateral to medial what are the carpal bones of the distal row?
Trapezium (closest to thumb)
Trapezoid
Capitate
Hamate
What is a triangular connective tissue membrane between the subcutaneous tissue of the palm that the tendons of the palm?
palmar aponeurosis
What is the apex of the palmar aponeurosis?
insertion of the palmaris longs muscle (when present)
What is the apex of the palmar aponeurosis fused with?
the underlying flexor retinaculum
The base of the palmar aponeurosis attaches via pretendinous bands of what?
The fibrous digital sheaths of digits 2-5.
The palmar aponeurosis serves as the origin of what?
The subcutaneous palmaris brevis muscle
What is a transverse fibrous structure anterior to the carpals?
flexor retinaculum
What are the lateral attachments of the flexor retinaculum?
scaphoid and trapezium
What are the medial attachments of the flexor retinaculum
pisiform, triquetrum and the hook of the hamate.