3. What jobs do the following male organs perform to aid in sexual reproduction? a. Testes: b. Epididymis: c. Vas Deferens: d. Urethra:

a. **Testes:** The testes are responsible for producing sperm (spermatogenesis) and the male sex hormone testosterone. Testosterone plays a crucial role in the development and maintenance of male secondary sexual characteristics, as well as in sperm production.<br /><br />b. **Epididymis:** The epididymis is a long, coiled tube located on the backside of each testicle. It stores sperm produced in the testes and provides the environment for them to mature and become motile (capable of movement).<br /><br />c. **Vas Deferens:** The vas deferens are tubes that transport mature sperm from the epididymis to the ejaculatory duct. During ejaculation, muscular contractions propel the sperm forward.<br /><br />d. **Urethra:** The urethra is the tube that carries both urine and semen out of the body through the penis. While it serves both urinary and reproductive functions, urine and semen do not pass through the urethra simultaneously.<br />