Anatomy

• cavity

  (anatomy) a natural hollow or sinus within the body.

• tube

  (anatomy) any hollow cylindrical body structure.

• concha

  (anatomy) a structure that resembles a shell in shape.

• cingulum

  (anatomy) an encircling structure (as the ridge around the base of a tooth).

• radicle

  (anatomy) a small structure resembling a rootlet (such as a fibril of a nerve).

• fundus

  (anatomy) the base of a hollow organ or that part of the organ farthest from its opening...

Eye

• lacrimal apparatus

  The structures that secrete and drain tears from the eye.

• uvea

  The part of the eye that contains the iris and ciliary body and choroid.

Chromosome

• nucleolus organizer

  The particular part of a chromosome that is associated with a nucleolus after...

• centromere

  A specialized condensed region of each chromosome that appears during mitosis where the...

Labyrinth

• membranous labyrinth

  The sensory structures of the inner ear including the labyrinthine receptors...

• bony labyrinth

  Cavity in the petrous part of the temporal bone that contains the membranous lab...

Also contains

• neural structure

  A structure that is part of the nervous system.

• passage

  A path or channel or duct through or along which something may pass; "the nasal passage...

• cartilaginous structure

  Body structure given shape by cartilage.

• plexus

  A network of intersecting blood vessels or intersecting nerves or intersecting lymph ves...

• convolution

  A convex fold or elevation in the surface of the brain.

• fold

  A folded part (as in skin or muscle).

• funiculus

  Any of several body structure resembling a cord.

• capsule

  A structure that encloses a body part.

• valve

  A structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid...

• rib

  A riblike supporting or strengthening part of an animal or plant.

• glans

  A small rounded structure; especially that at the end of the penis or clitoris.

• carina

  Any of various keel-shaped structures or ridges such as that on the breastbone of a bird...

• layer

  Thin structure composed of a single thickness of cells.

• vascular structure

  A structure composed of or provided with blood vessels.

• root

  The part of a tooth that is embedded in the jaw and serves as support.

• blade

  A broad flat body part (as of the shoulder or tongue).

• landmark

  An anatomical structure used as a point of origin in locating other anatomical structures...

• calyculus

  A small cup-shaped structure (as a taste bud or optic cup or cavity of a coral containing...

• tooth

  Toothlike structure in invertebrates found in the mouth or alimentary canal or on a shell.

• infundibulum

  Any of various funnel-shaped parts of the body (but especially the hypophyseal sta...

• chiasma

  An intersection or crossing of two tracts in the form of the letter X.

• filament

  A threadlike structure (as a chainlike series of cells).

• interstice

  A small structural space between tissues or parts of an organ; "the interstices of a...

• limbus

  A border or edge of any of various body parts distinguished by color or structure.

• cytoskeleton

  A microscopic network of actin filaments and microtubules in the cytoplasm of many...

• apodeme

  Ridge-like ingrowth of the exoskeleton of an arthropod that supports internal organs and...

• peristome

  Region around the mouth in various invertebrates.

• pad

  The fleshy cushion-like underside of an animal's foot or of a human's finger.

• head

  That part of a skeletal muscle that is away from the bone that it moves.

• syrinx

  The vocal organ of a bird.

• alveolar bed

  Lung tissue densely packed with alveoli.

• gill slit

  One of a series of slit openings in the pharynxes of fishes and aquatic amphibians through...

• gill arch

  One of the bony or cartilaginous arches on each side of the pharynx that support the gills...

• lens nucleus

  The central structure of the lens that is surrounded by the cortex.

• aster

  Star-shaped structure formed in the cytoplasm of a cell having fibers like rays that surround...

• bulb

  A rounded dilation or expansion in a canal or vessel or organ.

• cauda

  Any taillike structure.

• germ

  A small apparently simple structure (as a fertilized egg) from which new tissue can develop...