attached_to postocciput profurca ventral profurco-postoccipital muscle HAO:0001066 The postoccipital muscle that arises partly from the anterior surface of the dorsal profurcal lamella ventral to the site of origin of the dorsal profurco-postoccipital muscle and partly from the median area of the dorsal profurcal lamella. fu1v-poc ventral profurco-postoccipital profurco-postoccipital muscle