[Long palmar muscle (M. palmaris longus) in human fetuses].

In 90 human foetuses between 4 and 7 months of fetal life we compared the length of the venters and tendons of Musculi palmares longi. We observed an intramuskular part of tendon and it was revealed that the mechanism of the venter reduction is due to penetration of the connective tissue streaks in place of the muscle fibres being in the course of atrophy. This process has occurred significantly higher in the female foetuses.