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• layer go
  thin structure composed of a single thickness of cells
  
• apodeme go
  ridge-like ingrowth of the exoskeleton of an arthropod that supports internal organs and provides attachment points for muscles
  
• calyculus, caliculus, calycle go
  a small cup-shaped structure (as a taste bud or optic cup or cavity of a coral containing a polyp)
  
• tooth go
  toothlike structure in invertebrates found in the mouth or alimentary canal or on a shell
  
• pad go
  the fleshy cushion-like underside of an animal's foot or of a human's finger
  
• gill slit, branchial cleft, gill cleft go
  one of a series of slit openings in the pharynxes of fishes and aquatic amphibians through which water passes
  
• gill arch, branchial arch, gill bar go
  one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians
  
• peristome go
  region around the mouth in various invertebrates
  
• syrinx go
  the vocal organ of a bird
  
• bulb go
  a rounded dilation or expansion in a canal or vessel or organ
  
• carina go
  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 go
  any taillike structure
  
• chiasma, chiasm, decussation go
  an intersection or crossing of two tracts in the form of the letter X
  
• cingulum go
  (anatomy) an encircling structure (as the ridge around the base of a tooth)
  
• concha go
  (anatomy) a structure that resembles a shell in shape
  
• filament, filum go
  a threadlike structure (as a chainlike series of cells)
  
• germ go
  a small apparently simple structure (as a fertilized egg) from which new tissue can develop into a complete organism
  
• infundibulum go
  any of various funnel-shaped parts of the body (but especially the hypophyseal stalk)
  
• interstice go
  a small structural space between tissues or parts of an organ
  
• landmark go
  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 go
  a border or edge of any of various body parts distinguished by color or structure
  
• rib go
  a riblike supporting or strengthening part of an animal or plant
  
• blade go
  a broad flat body part (as of the shoulder or tongue)
  
• radicle go
  (anatomy) a small structure resembling a rootlet (such as a fibril of a nerve)
  
• plexus, rete go
  a network of intersecting blood vessels or intersecting nerves or intersecting lymph vessels
  
• tube, tube-shaped structure go
  (anatomy) any hollow cylindrical body structure
  
• passage, passageway go
  a path or channel or duct through or along which something may pass
  
• fundus go
  (anatomy) the base of a hollow organ or that part of the organ farthest from its opening
  
• funiculus go
  any of several body structure resembling a cord
  
• head go
  that part of a skeletal muscle that is away from the bone that it moves
  
• cavity, bodily cavity, cavum go
  (anatomy) a natural hollow or sinus within the body
  
• root, tooth root go
  the part of a tooth that is embedded in the jaw and serves as support
  
• capsule go
  a structure that encloses a body part
  
• uvea go
  the part of the eye that contains the iris and ciliary body and choroid
  
• lens nucleus, nucleus go
  the central structure of the lens that is surrounded by the cortex
  
• membranous labyrinth go
  the sensory structures of the inner ear including the labyrinthine receptors and the cochlea
  
• bony labyrinth, osseous labyrinth go
  cavity in the petrous part of the temporal bone that contains the membranous labyrinth
  
• glans go
  a small rounded structure
  
• alveolar bed go
  lung tissue densely packed with alveoli
  
• valve go
  a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
  
• vascular structure go
  a structure composed of or provided with blood vessels
  
• lacrimal apparatus go
  the structures that secrete and drain tears from the eye
  
• cytoskeleton go
  a microscopic network of actin filaments and microtubules in the cytoplasm of many living cells that gives the cell shape and coherence
  
• nucleolus organizer, nucleolus organiser, nucleolar organizer, nucleolar organiser go
  the particular part of a chromosome that is associated with a nucleolus after nuclear division
  
• centromere, kinetochore go
  a specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape
  
• aster go
  star-shaped structure formed in the cytoplasm of a cell having fibers like rays that surround the centrosome during mitosis
  
• neural structure go
  a structure that is part of the nervous system
  
• fold, plica go
  a folded part (as in skin or muscle)
  
• convolution, gyrus go
  a convex fold or elevation in the surface of the brain
  
• cartilaginous structure go
  body structure given shape by cartilage
  
• ball go
  a more or less rounded anatomical body or mass
  
• plate go
  any flat platelike body structure or part
  
• horny structure, unguis go
  any rigid body structure composed primarily of keratin
  
• skeletal structure go
  any structure created by the skeleton of an organism
  
• costa go
  a riblike part of a plant or animal (such as a middle rib of a leaf or a thickened vein of an insect wing)
  
• head go
  the rounded end of a bone that fits into a rounded cavity in another bone to form a joint
  
• bridge go
  the hard ridge that forms the upper part of the nose
  
• rotator cuff go
  a supporting structure of the shoulder consisting of the muscles and tendons that attach the arm to the shoulder joint and enable the arm to move
  
• cornu go
  (anatomy) any structure that resembles a horn in shape
  
• corona go
  (anatomy) any structure that resembles a crown in shape
  
• receptor go
  a cellular structure that is postulated to exist in order to mediate between a chemical agent that acts on nervous tissue and the physiological response
  
• zone, zona go
  (anatomy) any encircling or beltlike structure