| 释义 |
orbiculus orbiculus (or-bik'u-lus) plural.orbiculi [L., little circle] Muscle surrounding an orifice; a sphincter muscle. orbiculus ciliarisThe portion of the ciliary body consisting of a bandlike zone lying directly anterior to the ora serrata. Synonym: ciliary ringorbiculus orisThe circular muscle surrounding the mouth. It is a muscle of facial expression, innervated by the facial nerve. |