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Ch.4 Pregnant notes

TermDefinition
Cell Smallest unit of life that is able to produce itself.
Sperm Male germ cell
Ovum Female germ cell
Conception The joining of the sperm and the Ovum.
Zygote A single cell formed by conception.
Fallopian tubes Two hollow tubes that connect to the uterus and have finger-like projections that reach toward each ovary.
Uterus This is the organ in which the baby is developed and is protected until birth.
Genetic factor The traits that are passed through genes
Chromosomes Threadlike structures that carry genes in living cells.
Dominant traits Traits always show in a person even if only one gene pair is inherited for the trait
Recessive traits Traits that typically do not show in a person unless both genes for the trait are inherited.
Multiple pregnancy Pregnancy in which two or more babies develop
Fraternal Term describing children from multiple pregnancies who develop from two ova and differ in genetic makeup.
Chorion Membrane that surrounds the baby in the uterus.
Identical Term describing children from multiple pregnancies who develop from one fertilized ovum and have the same genetic makeup.
Prenatal development The development that takes place between conception and birth.
Germinal stage The first stage of prenatal development, which lasts about two weeks after conception.
Amnion A fluid-filled sac that surrounds the baby in the uterus
Placenta An organ filled with blood vessels that nourishes that baby in the uterus
Umbilical cord The cord that connects the baby to the placenta
Embryonic stage The second stage of prenatal development which lasts about six weeks
Embryo Term used to describe a baby in the embryonic stage of development
Cartilage Soft, elastic, flexible tissue that provides structure for the body
Fetal stage The third stage of pregnancy, lasting from about nine weeks after conception until birth
Fetus Term used to describe a baby in the fetal stage of development
Quickening Movements of the fetus that can be felt by the mother
Age of Viability The age at which the most babies could survive if they were born (28th week of pregnancy)
Created by: Yesen1aAmaya
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