Bone markings

sinus

cavity within a bone

fissure

cleft or groove, split

head

enlargement on the end of a bone

spine

thronlike projection

fovea

tiny pit or depression

meatus

tubelike passageway within a bone

canal

tubular passage

ramus

branch or similar extension

suture

interlocking line of union between bones

tuberosity

knoblike process usually larger than a tubercle, rough elevation

crest

narrow, ridgelike projection

linea

narrow, slightly raised ridge

foramen

opening through a bone that usually serves as a passageway for blood vessels, nerves, or ligaments

protuberance

overgrowth

epicondyle

projection situated above (superior to) a condyle

process

prominent projection on a bone

fossa

relatively deep pit or depression

trochanter

relatively large process

Condyle

rounded process that usually articulates with another bone

tubercle

small, knoblike process

facet

small, nearly flat surface

fontanel

soft spot in the skull where membranes cover the space between bones