tunica externa
[ ĭk-stûr′nə ]
n.
The outer of two or more enveloping layers of any structure, especially the fibroelastic coat of a blood or lymph vessel.
Words nearby tunica externa
tunic,
tunica,
tunica adventitia,
tunica albuginea,
tunica conjunctiva,
tunica externa,
tunica fibrosa,
tunica intima,
tunica media,
tunica mucosa,
tunica muscularis