The occurrence of Mm. contrahentes and their changes during the development of the human hand.
D000717:Anatomy, Comparative; D000818:Animals; D007312:Eulipotyphla; D005333:Fetus; D006225:Hand / Q000196:embryology*; D000882:Haplorhini; D006801:Humans; D008394:Marsupialia; D009132:Muscles / Q000196:embryology*; D011323:Primates