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  4. Why is it important to check nutrition labels?  5. What is the difference between the sale deadline and the consumption deadline for the  label?  6. What are the health benefits of maintaining an adequate balance of  nutrients investigated?  7. What long-term complications can your hearing cause?  inappropriate?  8. Do you consider that the advertising media influence the eating styles of the  society?  9. Will you worry more about the food and nutrients you eat?

morula p.Haploid cell that when merged with a gamete from the opposite sex creates a diploid zygote q.Duration of pregnancy counted from the first day of the last menstrual period, expressed in weeks and days or fractions 19._ conceptual of weeks. A pregnancy typically lasts about 280 days or 40 age weeks, counted from the first day of the last menstrual 20. period, and is commonly divided into three trimesters: gestational age (GA, 1st trimester -0 days (first day of last menstrual period) to synonym: menstrual end of the 13th week age) 2nd trimester-14 weeks to the end of the 27th week 21 pregnancy 3rd trimester -28 weeks to delivery associated plasma r.First sonographic evidence of an intrauterine pregnancy, protein A (PAPP-A) the fluid-filled blastocyst 22. chorionic s.Number of times a woman has been pregnant villi t.Hormone produced by trophoblast cells of the blastocyst 23. amnion that extends the life of the corpus luteum in the ovary. Most 24. gamete pregnancy tests are based on detection of hCG 25. oocyte u.First day of last menstrual period 26. chorion V.A hormone produced in the anterior pituitary that triggers ovulation in females 27. follicle stimulating hormone w.Average mean diameter of the gestational sac used to (FSH) determine gestational age 28. nuchal x.Solid cluster of undifferentiated cells formed by repeated transluceny (NT) cleavage of the single cell that resulted from the fusion of two 29. gametes blastocyst y.Subcutaneous fluid in the posterior region of the neck of 30. acrosome embryos and fetuses up to 14 weeks’ gestational age. 31. Abnormally large nuchal translucencies have been associated fertilization with a higher risk of chromosomal and structural 32 abnormalities aneuploidy z.Female gamete, aka ovum or egg 33. zygote aa Protein produced by the trophoblasts. Abnormal levels of PAPP-A may be associated with an increased risk of chromosomal abnormalities bb.Hormone produced by the corpus luteum and the placenta cc.Male gamete dd.A structure within the cavity of the blastocyst that provides nourishment to the embryo and produces its first o KEY TERMS DEFINITIONS 1. estrogen a.Area located in the head of the sperm containing enzymes to aid in penetration of the oocyte 2. mean sac diameter (MSD) b. Membrane enclosing the amniotic cavity and embryo or 3. yolk sac fetus (synonym: umbilical c.Abnormal number of chromosomes vesicle) d.Early gestation consisting of a thin outer layer of cells 4. (trophoblast), a fluid-filled cavity, and an inner cell mass decidualization (embryoblast) 5. luteinizing e.Membrane around the chorionic cavity, made up of hormone trophoblast cells and extraembryonic mesoderm 6. umbilical f.Bud-like outward growths from the trophoblast, some of vesicle (synonym: which will give rise to the fetal portion of the placenta yolk sac) g.Duration of pregnancy counted from fertilization 7. estimated (conception) expressed in hours or days. Also called date of delivery (EDD) embryonic age or postovulatory age 8. LMP h.Product of fertilization including all stages from zygote to 9. fetus spermatozoon i.Progesterone-secreting structure formed by a follicle after (plural: spermatozoa) releasing its oocyte 10. j.Measurement of longest axis of an embryo determines rump length (CRL) gestational age 11. human k. Due date, calculated by adding 280 days to the first day of chorionic the last menstrual period, also called estimated date of gonadotropin (hCG) confinement (EDC) 12. 1.Changes in the endometrium to allow implantation offa progesterone blastocyst corpus m.Group of hormones, primarily produced in the ovaries, luteum which affect secondary sex characteristics and the menstrual 14. gravidity cycle 15. parity n.Penetration of an oocyte by a sperm to form a diploid 16. conceptus zygote 17 o. Hormone produced in the anterior pituitary, which gestational sac stimulates the maturation of ovarian follicles crown- 13

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