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Ch 51 Sec 3
| Question | Answer |
|---|---|
| Gestation | in mammals, the process of carrying young from fertilization to birth |
| Blastocyst | the modified blastula stage of mammalian embryos |
| Implantation | the process by which the newly fertilized egg in the blastocyst stage embeds itself in the lining of the uterus |
| Pregnancy | the period of time between conception and birth |
| Trimester | Pregnancy is divided into three different stages |
| Embryo | in humans, a developing individual is referred to as an embryo from the second through the eighth week of pregnancy |
| Amniotic Sac | the sac formed by the amnion |
| Chorionic Villus | fingerlike projections of the chorion that extend into the uterine lining (singular, chorionic villus) |
| Placenta | the structure that attaches a developing fetus to the uterus and that enables the exchange of nutrients, wastes, and gases between the mother and the fetus |
| Umbilical Cord | the structure that connects an embryo and then the fetus to the placenta and through which blood vessels pass |
| Human Chorionic Gonadotropin | a hormone that is secreted by the placenta and that stimulates ovulation and secretion of progesterone or testosterone (abbreviation, HCG) |
| Fetus | a developing human from seven or eight weeks after fertilization until birth |
| Labor | the process by which the fetus and the placenta come out of the uterus |
| Afterbirth | the remains of the placenta and the membranes, which are expelled from the mother's body following birth |
Created by:
celesteb34
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