2-paragraph+essay+NLL

2-paragraph essay

Sperm is produced in the testes. Sperm is then collected in the seminiferous tubules, which are an average of 18ft. long. The sperm mature in the epididymis and learn to swim after they mature. When sperm leaves the epididymis they enter a vas deferens, also called the duct deferens, where they may also be stored for a time. Each vas deferens passes into the abdominal cavity, where it curves around the bladder and empties into an ejaculation duct. The ejaculatory ducts enter the urethra. The sperm then leaves the penis in a fluid called semen.

In the female reproductive system eggs are produced in the ovaries. The eggs are then fertilized in the fallopian tube or duct tube that the egg travels through. The fimbria sweep over the ovaries. When an egg burst from an ovary during ovulation, it usually is swept into an oviduct by the combined action of the fimbriae and the beating of the cilia that line the oviducts. Once in the oviduct, the egg is propelled slowly by ciliary movement and tubular muscle contraction toward the uterus. In the uterus the fetus develops. Lastly the vagina serves as the birth canal.