The Reproductive System: Anatomy and Physiology (01:39)
An ovum and a spermatozoon fuse into a zygote. This program will explore the male and female reproductive system, fertilization, pregnancy, and lactation. Unlike the digestive or circulatory system, the reproductive system remains dormant until puberty.
The Male Reproductive System (04:16)
Explore the parts of the male reproductive system: the penis, the scrotum, the testes, the duct system and the glands. Testosterone results in increased body hair and larynx size. When the spermatozoa leave the epididymis it combines with fluids from the prostate gland and Cowper's gland to form semen.
The Female Reproductive System (03:40)
Explore the parts of the female reproductive system: the vulva, the vagina, the cervix, the uterus, the Fallopian tubes, the mammary glands, and the ovaries. The vulva's main functions include urination, sexual behavior, menstruation, and childbirth. Learn about a woman's menstrual cycle.
Fertilization, Pregnancy, and Labor (07:22)
During intercourse, sperm cells are deposited in a woman's vagina and swim to meet the egg in the Fallopian tubes. Pregnancy occurs when the zygote implants on the uterine wall. A woman is in active labor when she has three or four contractions every 10 minutes, each contraction is approximately 60 seconds long, and the cervix is dilated more than three centimeters.
Credits: The Reproductive System: Anatomy and Physiology (00:14)
Credits: The Reproductive System: Anatomy and Physiology
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