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chapter 4

pregnancy

TermDefinition
cell smallest unit of life that is able to reproduce itself
sperm male sex cell
ovum female sex cell; also called an egg
conception the union of the ovum and sperm cells
zygote the single cell formed at conception;also called a fertilized egg
Fallopian tubes two hollow tubes that connect to the uterus and have finger-like projections that reach toward each ovary.
uterus the organ in which the baby develops and is protected until birth.
genetic factors traits that are passed through the genes.
chromosomes threadlike structures that carry genes in living cells
dominant traits traits that always show in a person even if only one gene of the pair is inherited for that trait
recessive traits traits that typically do not show a person unless both genes for the trait are inherited
multiple pregnancy pregnancy in witch two or more babies develop
fraternal term describing children from multiple pregnancies who develop from two ova and differ in genetic make up
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 development that takes place between conception and birth
germinal stage first stage of prenatal development, which lasts about two weeks after conception
amnion fluid-filled sac that surrounds the baby in the uterus
placenta an organ filled with blood vessels that nourishes the baby in the uterus
umbilical cord the cord that connects the baby to the placenta
embryonic stage second stage of prenatal development which lasts six weeks
embryo baby in the embryonic stage of development
cartilage soft, elastic,flexible tissue that provides structure for the body
fetal stage third stage of pregnancy
fetus a baby in the fetal stage of development
quickening movements of the baby that can be felt by the mother
age of viability age where most babies could survive if they were born
Created by: loganb2356
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