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prenatal development
list of vocabulary for chapter 3 Leifer PHCC
| Question | Answer |
|---|---|
| autosomes | body chromosomes |
| mitosis | each daughter cell contains the same number of chromosomes as the parent cell |
| diploid | 46 chromosomes |
| spermatogenesis | process of mitosis in the sperm |
| oogenesis | process of mitosis in the ovum |
| haploid | 23 chromosomes |
| zygote | the cell formed by the union of the sperm and the ovum |
| blastocyst | a stage in the embryonic development that follows the morula |
| endometrium | the mucous membrane that lines the inner surface of the uterus |
| amnion | the inner of the two fetal membranes:thin and transparent, holds the fetus suspended in amniotic fluid |
| Wharton's jelly | yellow-white gelatinous material that surrounds and protects the vessels of the umbilical cord |
| trophoblast | comprises the nutrient relationship with the endometrium of the uterus |
| teratogen | a nongenetic factor that can produce malformations of the fetus |
| morula | a solid mass of cells that developed from the fertilized ovum |
| monozygotic twins | two fetuses that develop from a single divided fertilized ovum: identical twins |
| mesoderm | the intermediate layer of germ cells in the embryo that gives rise to connective tissue, bone marrow,muscles, blood, lymphoid tissue, and epithelial tissue |
| endoderm | the inner layer of cells in a developing embryo that give rise to internal organs such as the intestines |
| ectoderm | the outer layer of cells in the developing embryo that gives rise to the skin, nails, and hair |
| decidua basalis | the part of the decidua that unites with the chorion to form the placenta. It is shed in lochial discharge after delivery |
| chorion | the fetal membrane closest ot the interior uterine wall: it gives rise to the placenta and continues as the outer membrane surrounding the amnion |
| chorionic villi | threadlike projections on the chorionic surface of the placenta; they help to form the placenta and secrete human chorionic gonadotropin |
| dizygotic twins | fetuses that develop from two fertilized ova: fraternal twins |
| What are the three fetal circulatory shunts | ductus venosus, foramen ovale, ductus arteriosus |
| AVA | artery, vein, artery |
| hCG | human chorionic gonadotropin |
Created by:
kathieerickson
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