Reproductive System Notes see transparancy

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Presentation transcript:

Reproductive System Notes see transparancy Male Reproductive System: produces sperm and hormone testosterone; consists of testes, scrotum, penis. Testes: organ that produces sperm and testosterone (which controls male physical characteristics). Scrotum: external pouch containing testes. Semen: mixture of sperm cells and fluids. Penis: male sex organ; contains end of urethra where urine/semen leave the body.

Reproductive System Notes see transparancy Female Reproductive System: produces eggs and hormones estrogen, progesterone; consists of the ovaries, fallopian tubes, uterus, vagina. Ovaries: produce egg cells and estrogen (which controls some female characteristics) and progesterone. Fallopian tube: connects ovary (egg) to uterus; where fertilization occurs. Each month, one of the ovaries releases an egg. Uterus (womb): hollow muscular organ; the zygote develops (embryo,fetus,newborn) in the uterus Vagina: opening between uterus and outside body.

Reproductive System Notes Sexual Reproduction (= Meiosis). The gametes are: Egg: female sex cell (= 23 chromosomes) Sperm: male sex cell (= 23 chromosomes) Fertilization: joining of sperm and egg Zygote: fertilized egg (= 46 chromosomes) Note: zygote undergoes cell division (= Mitosis): zygote → embryo → fetus → newborn (birth). Chromosome: X-shaped structure in cell’s nucleus contains units called genes which carries genetic information (inherited traits).

Ovulation, Fertilization, Zygote Cell Division Watch video fertilized egg, life begins fallopian tube uterus, womb

Reproductive System Notes see transparancy Menstrual Cycle: monthly cycle of change consisting of egg development in ovary and uterus prepares for arrival of embryo. Beginning: development of mature egg; uterus thickens Midway: egg released from ovary into fallopian tube (= ovulation); where fertilization occurs. If no fertilization, menstruation (“period”) occurs. Menstruation: blood, unfertilized egg, uterus’s tissue lining leaves body through vagina.

Endometrium Uterine lining female period

Endometrium Uterine Lining

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