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Where do babies come from? 4/25 We were not delivered by a stork! 

Where do babies come from? 4/25 We were not delivered by a stork! . Ovulation Fertilization Oocyte zygoteblastocoelembryofetus NeonateInfantChildCollegeStudent Middle age Elderly yearsDeath Lets look at the most exciting part. Reproductive Physiology: Monthly cycle.

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Where do babies come from? 4/25 We were not delivered by a stork! 

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  1. Where do babies come from? 4/25We were not delivered by a stork!  • Ovulation • Fertilization • Oocytezygoteblastocoelembryofetus • NeonateInfantChildCollegeStudent • Middle age Elderly yearsDeath • Lets look at the most exciting part

  2. Reproductive Physiology: Monthly cycle

  3. Follicular ultrasound

  4. The mature (M-2) oocyte with associated follicular cells following ovulation.

  5. The fertilization of egg occurs in ovarian duct/fallopian tube.

  6. Day 5—Blastocyst is now in the uterus and will hopefully adhere to the mucus covered endometrium (implantation)

  7. Some parents may perform an amniocentesis and a chromosomal analysis to look for problems.

  8. Fertilization occurs in the ovarian duct (fallopian tube) and implantation on the mucus covered endometrium.

  9. Embryo and placenta are in a race against time to create hCG that is required to maintain corpus luteum and progesterone production!

  10. If all goes well this is the pattern of grown observed (weeks 4-36). Parturition typically occurs at about 40 weeks (median=7lb 11 oz)

  11. What physiological events occur in the fetus? • Formation of nervous system: • Blood and Circulation: • Gas exchange: • Removal of nitrogenous wastes: • Formation of hard palate: • Hardening of bone: • Preparation of lungs for birth:

  12. Some parents may perform an ultrasound to look for problems. This is where the fetus is 12 weeks after the end of the last menstrual cycle. XXXXXXXXXXXX

  13. After 19 weeks the fetus can move and sometimes even be observed to suck their thumb.

  14. Parturition is the birth process:Over a period of a few weeks contractions of smooth muscle in the uterus will intensify leading to a short period where the uterine contractions contract in a positive feedback loop leading to contractions that are forceful enough to push the fetus out of the uterus and vagina (neonate).C-sections are required if this process is unsuccessful. Birth remains one of the most dangerous activities a woman can do.

  15. Lets look at some fetal physiology? • Exercise of skeletal muscles? • Neurological development/exercise? • Breathing rate? • Sucking reflex? • Umbilical artery CO2 and waste placenta • Placenta umbilical veinoxygen and nutrients • How are heart rate and circulatory systems of the mother and fetus linked?

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