Listeria. Listeria is a bacterium that causes a serious infection called listeriosis. Around 300 deaths are caused by Listeria infection each year, according to estimates from a 2011 CDC report. Listeria bacteria are most commonly found in raw foods. Vegetables can be contaminated by soil and water carrying bacteria.
Human male reproductive system. The scrotum is the bag that holds the testicles (commonly called balls) in male mammals. It is made of skin and muscle and is found between the penis and anus. It is often covered in pubic hair and becomes tight when the male is aroused.
The scrotum is located outside the body, because sperm production requires a cooler temperature then the internal body. So, they are located outside to achieve the right tempe â¦ rature for the production of sperm.he temperature needed for the sperms to survive and thrive is lower than the optimum body temperature, hence it is not possible to maintain a lower temperature inside the bo â¦ dy hence the testes are located outside the body.