anatomical structure - a particular complex anatomical part of a living thing; "he has good bone structure"layer - thin structure composed of a single thickness of cells apodeme - ridge-like ingrowth of the exoskeleton of an arthropod that supports internal organs and provides attachment points for muscles caliculus, calycle, calyculus - a small cup-shaped structure (as a taste bud or optic cup or cavity of a coral containing a polyp) tooth - toothlike structure in invertebrates found in the mouth or alimentary canal or on a shell pad - the fleshy cushion-like underside of an animal's foot or of a human's finger branchial arch, gill arch, gill bar - one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians peristome - region around the mouth in various invertebrates syrinx - the vocal organ of a bird body part - any part of an organism such as an organ or extremity bulb - a rounded dilation or expansion in a canal or vessel or organ carina - any of various keel-shaped structures or ridges such as that on the breastbone of a bird or that formed by the fused petals of a pea blossom cauda - any taillike structure cingulum - (anatomy) an encircling structure (as the ridge around the base of a tooth) concha - (anatomy) a structure that resembles a shell in shape filum, filament - a threadlike structure (as a chainlike series of cells) germ - a small apparently simple structure (as a fertilized egg) from which new tissue can develop into a complete organism infundibulum - any of various funnel-shaped parts of the body (but especially the hypophyseal stalk) interstice - a small structural space between tissues or parts of an organ; "the interstices of a network" landmark - an anatomical structure used as a point of origin in locating other anatomical structures (as in surgery) or as point from which measurements can be taken limbus - a border or edge of any of various body parts distinguished by color or structure rib - a riblike supporting or strengthening part of an animal or plant blade - a broad flat body part (as of the shoulder or tongue) radicle - (anatomy) a small structure resembling a rootlet (such as a fibril of a nerve) plexus, rete - a network of intersecting blood vessels or intersecting nerves or intersecting lymph vessels passageway, passage - a path or channel or duct through or along which something may pass; "the nasal passages" fundus - (anatomy) the base of a hollow organ or that part of the organ farthest from its opening; "the uterine fundus"; "the fundus of the stomach" funiculus - any of several body structure resembling a cord head - that part of a skeletal muscle that is away from the bone that it moves tooth root, root - the part of a tooth that is embedded in the jaw and serves as support capsule - a structure that encloses a body part uvea - the part of the eye that contains the iris and ciliary body and choroid membranous labyrinth - the sensory structures of the inner ear including the labyrinthine receptors and the cochlea; contained within the bony labyrinth glans - a small rounded structure; especially that at the end of the penis or clitoris valve - a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it |