Upper Extremity: Intrinsic Hand Musculature

Question 1

Answer 1

Question 2

Answer 2

Question 3

___ muscle connect to the metacarpals of the bones and connect to tendons hood that surrounds that __-___ joint.

Answer 3

Interossei muscle connect to the metacarpals of the bones and connect to tendons hood that surrounds that carpal-phalangeal joint.

Question 4

Answer 4

Question 5

Dorsal interossei ___ (spread) the fingers (DAB)

Palmar interossei ___ the fingers (PAD)

Answer 5

Dorsal interossei ABDUCT (spread) the fingers (DAB)

Palmar interossei ADDUCT the fingers (PAD)

Question 6

OIF of lumbricals

Answer 6

o; from tendons of flexor digitorum profundus (deep digital flexors)

i; extensor expansions digits (2-5)

f; flexion of the metacarpophalangeal joints and extension of interphalangeal joints.

Question 7

Answer 7

Question 8

adductor pollicis function

Answer 8

adduction of thumb

Question 9

palamar interossei function

Answer 9

adduction of digits 2,4,5 (PAD)

Question 10

function of dorsal interossesi

Answer 10

abduction of digits 2, 3, 4. DAB.

Question 11

Answer 11