Canaliculus
# Canaliculus

In anatomy, a canaliculus is a small passageway.

Examples include:

* Two functionally different structures in bone:
   * Bone canaliculus, a small channel found in ossified bone for nutrition for example in the Haversian canal
   * A small canal (anatomy) in bone which carries some structure (such as a nerve) through it
* Canaliculus (parietal cell), an adaptation found on gastric parietal cells
* The lacrimal canaliculi, several small ducts in the eye
* The dental canaliculi, the blood supply within a tooth
* Bile canaliculi, where the bile produced by the hepatocytes is drained
* Inferior tympanic canaliculus, the passage for the tympanic branch of the glossopharyngeal nerve and inferior tympanic artery
* Foramen petrosum (canaliculus innominatus), a small occasional opening in the greater wing of the sphenoid bone
