Muscles of Sole of Foot (4th Layer)

Question 0

dorsal interossei (4)

Answer 0

O: adjacent sides of metatarsals 1-5
I: first– med side of prox phalanx of 2nd digit
second-fourth– lat sides of 2-4 digits
N: ?
A: abducts digits 2-4, flex metatarsophalangeal joints

Question 1

plantar interossei (3)

Answer 1

O: bases and medial side of metatarsals 3-5
I: medial sides of bases of prox phalanx of digits 3-5
N: lateral plantar nerve S2, S3
A: adducts digits 3-5, flex metatarsophalangeal joint