porus acusticus externus


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porus

 [por´us] (L.)
porus acus´ticus exter´nus the outer end of the external acoustic meatus.
porus acus´ticus inter´nus the opening of the internal acoustic meatus in the cranial cavity.
porus op´ticus the opening in the sclera for passage of the optic nerve.

ex·ter·nal a·cous·tic pore

[TA]
the orifice of the external acoustic meatus in the tympanic portion of the temporal bone.

porus acusticus externus

The outer opening of the external acoustic meatus.
See also: porus