Category: M

Canal in the petrous portion of temporal bone, through which pass the cochlear and vestibular nerves.  

External auditory canal from the eardrum to the external ear.  

Incision of urinary meatus to enlarge the opening.  

Knife with probe or guarded point for enlarging a meatus by direct incision.  

Instrumental examination of a meatus, especially the meatus of the urethra.  

A speculum for examining a meatus.  

Suture of the severed end of the urethra to the glans penis following surgical procedure to enlarge the meatus.  

Surgical construction of an external auditory canal.  

Device for measuring the size of a passage or opening.  

The dimensions, capacity, or quantity of anything that can be so evaluated. Length, area, volume, and mass are basic properties of matter and materials that can be measured.