Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Ch 4 Terms

TermDefinition
cell the smallest unit of life that is able to reproduce itself
sperm the male sex cell
ovum the female sex cell; also called the egg
conception the union of 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 fingerlike 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
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 the baby in the uterus
umbilical cord The cord that connects the baby to the placenta
embryonic stage The second stage of prenantal 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 most babies could survive if they were born (28th week of pregnancy)
Created by: brookekennedy