Check out these educational videos for veterinarians and curious eyes on the anatomy of the male reproductive tract in the bull. Here you will see, in three parts, the scrotum of the bull, which contains both of the testes. The scrotum is a thinner skin area of the rest of the beast, with less hair. Upon dissection of the male bovine scrotum, you will see the tunica dartos muscle and some stratum tissue. The testes is the structure that contains the sperm producing cells.
There has been an outbreak of syphilis in Oklahoma County with 75 confirmed cases connected by a social network driven by drug use and sex.
Exposed to hormones, pharmaceuticals, and other chemicals, the beautiful wild fish in Canada's Grand River have taken on some pretty odd characteristics—they're turning into females. A long-term study suggests using bacteria to manage polluted water could turn the tide for feminized fish.
There are all kinds of theories—many supported by science—about what causes Alzheimer's disease. Tangles of protein called ß-amyloid (pronounced beta amyloid) plaques are prominently on the list of possible causes or, at least, contributors. An emerging theory of the disease suggests that those plaques aren't the problem, but are actually our brains' defenders. They show up to help fight an infection, and decades later, they become the problem.
