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Human Reproduction

Human Reproduction. Benchmark: SC.912.L.16.13 Describe the basic anatomy and physiology of the human reproductive system. Describe the process of human development from fertilization to birth and major changes that occur in each trimester of pregnancy. Male Reproductive System.

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Human Reproduction

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  1. Human Reproduction Benchmark: SC.912.L.16.13 Describe the basic anatomy and physiology of the human reproductive system. Describe the process of human development from fertilization to birth and major changes that occur in each trimester of pregnancy.

  2. Male Reproductive System

  3. Male Reproductive System • Testes are suspended outside the abdominal cavity by the scrotum, a pouch of skin that keeps the testes close or far from the body at an optimal temperature for sperm development.

  4. Male Reproductive System • Seminiferous tubulesare inside each testis, and are where sperm are produced by meiosis. • Sperm mature in theepididymis. • When released, sperm travel through the vas deferens .

  5. Male Reproductive System • Secretions from the seminal vesicles add fructose and proteins to sperm as they pass. • The prostate gland secretes a milky alkaline fluid. • The bulbourethral gland secretes a mucus-like fluid that provides lubrication for intercourse. • Sperm and secretions make up semen.

  6. Female Reproductive System • The ovaries are the female gonads that create eggs. • After the process of ovulation, an egg moves into a fallopian tube (oviduct) and travels to the uterus.

  7. Fertilization and Development • During intercourse, sperm is deposited in the vagina. • When the sperm fertilizes an egg, a zygote forms. • The zygote goes through cell divisions as it moves toward the uterus.

  8. Fertilization and Development • At the uterus, the embryo implants into the uterine wall.

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