teat sinus(redirected from teat sinus absent)
the cavity which occupies most of the volume of the teat; dorsally it is continuous with the mammary gland sinus; ventrally it leads into the papillary duct (teat canal) and to the exterior; its confines consist of the distensible teat wall. Called also teat cistern.
teat sinus absent
congenital defect immediately branding the animal as a cull.