abled: Quiz 10 Saved Which structure is not apparent on the rear external anatomy in male pigs? Anus Urogenital opening Choice Hock Urogenital papilla

In male pigs, the structure that is not visible externally on the rear is the urogenital papilla. This small, nipple-like structure is found internally and plays a role in the reproductive system, being related to the urinary and reproductive tracts. Unlike the anus or urogenital opening, which are clearly visible, the urogenital papilla hides away beneath the surface. On the other hand, the hock is a visible joint located on the hind leg of the pig, similar to an ankle in humans. This joint is critical for mobility, allowing pigs to run and navigate their environments efficiently. Observing the hock can provide insights into the pig's overall health and activity level.