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Published byWyatt Jensen
Modified over 4 years ago
Human Reproductive System
Male Reproductive System
Sperm Formation MEIOSIS Form in testes Temperature important! ScrotumLeave testes via epididymus to the vas deferens
Semen Fluids help to transport, feed, and protect spermSeminal vesicles Prostate gland Bulbourethral glands
Secondary Sexual Characteristics - MaleProduced by testosterone Deeper voice Axillary and pubic hair Chest and facial hair Lengthen bones Increased size of testes for sperm production
Female Reproductive System
Ovum Formation MEIOSIS Ova are formed before birth1 ovum per month is matured and released from ovaries
Secondary Sexual Characteristics - FemaleInduced by increased LH, FSH, estrogen, and progesterone hormone levels Axillary and pubic hair Widen pelvis Enlarge mammary tissue Begin menstrual cycles
Fertilization Occurs in upper 1/3 of Fallopian tubeOnce one sperm enters, egg membrane changes Fertilized egg = zygote
Implantation Implanted into thick walls of uterusChorion membranes dig into uterus to form placenta Embryo supported via umbilical cord Once pregnant, progesterone levels stay high in mom
1st Trimester Heart develops first Neural tube developsAll body systems appear by Week 8 – Now a Fetus
2nd Trimester Mostly growth Looks more like a babySome preemies survive at this stage
3rd Trimester More growth Kicking, rolling, stretchingEyes open – Week 32 Lungs mature Rotates to head-down position
Birth Labor Uterine contractions begin Cervix dilates to 10 cm. BirthUterus pushes baby through vaginal canal Placenta delivered after
Most of this not fun?
Menstruation or Pregnancy
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