NUTR 2050 Lecture Notes - Lecture 7: Blood Sugar, Teratology, Menopause
24 Oct 2016
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Definitions: fertility production of children. Commonly taken to mean ability to bear children. Inability to bear children: fecundity biological ability to bear children. Biological inability to bear children: subfertility reduced level of fertility or early pregnancy losses. Infertility rates: about 18% of couples subfertile. About 44% will conceive with no intervention in 3 years: healthy couples have a 20-25% chance of diagnosed pregnancy within a single menstrual cycle. Reproductive physiology: puberty: period in which humans become biologically capable of reproduction, ova: female reproductive cells that are produced and stored in the ovaries, follicle: cellular structure in ovary where ovum matures, sperm: male reproductive cells. Puberty: capacity for reproduction through hormonal changes, 3-5years, reproductive systems begin to develop and grow (continue through period of puberty) Born with lifetime supple of ova, approx. Menstrual cycle: about 4 week cycle in which hormones build up blood and nutrient stores within the uterus (womb)
