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The Reproductive System

The Reproductive System. Dr. Paul A. Rodriguez. Reproduction. formation of new individuals involving vertebrate gametes - ♀ ova - ♂ spermatozoa fusion of sperm and egg (ovum) is sexual fusion of sperm and egg results in a zygote

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The Reproductive System

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  1. The Reproductive System Dr. Paul A. Rodriguez

  2. Reproduction • formation of new individuals involving vertebrate gametes - ♀ ova - ♂ spermatozoa • fusion of sperm and egg (ovum) is sexual • fusion of sperm and egg results in a zygote • in humans and other vertebrates, the reproductive system produces, stores, and releases specialized sex cells called gametes • gametes form and are ready for fertilization following a period of sexual development

  3. Embryological Development • the first six weeks of development for humans - embryo • female and male embryos are identical in appearance

  4. The Seventh Week + • Primary reproductive organs form - testes (male) - ovaries (female) • testes- endocrine glands which produce the male hormone TESTOSTERONE - stimulate formation of scrotum and penis • ovaries- endocrine glands which produce the female hormone ESTROGEN - stimulate formation of uterus, cervix, vagina and labia (minora and majora)

  5. At Birth + • gonads (testes and ovaries) continue to produce small amounts of sex hormones: luteinizing hormone (LH) and follicle stimulating hormone (FSH) that continue to influence development of reproductive organs

  6. Puberty • period of rapid growth and sexual maturation during which the reproductive system becomes fully functional • at the level of the CNS - the hypothalamus signals the pituitary gland to produce increased levels of hormones that will affect gonads • FSH (follicle stimulating hormone) • LH (luteinizing hormone)

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