hood protractor

From ZooTerms (Dictionary of Invertebrate Zoology)
Jump to: navigation, search
« hood | hood retractor »
hood protractor also protractor preputii: (Chaetognatha) An unpaired muscle that is found in the free edge of the hood that acts as a sphincter muscle to pull the hood over the head.
Retrieved from "https://species-id.net/zt/index.php?title=hood_protractor&oldid=71751"