Answer the following question given this paragraph: 

Sperm are released from the body during ejaculation. Ejaculation occurs when muscle contractions propel sperm from the epididymes. The sperm are forced through the ducts and out of the body through the urethra. As sperm travel through the ducts, they mix with fluids from the glands to form semen. Hundreds of millions of sperm are released with each ejaculation.


Q: Ejaculation occurs when muscle contractions propel sperm from where?


A:
epididymes