Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


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
remaining cards
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:
restart all cards
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

51.3 terms


amniotic sac the sac formed by the amnion
afterbirth the remains of the placenta and the membranes, which are expelled from the mother's body following birth
blastocyst the modified blastula stage of mammalian embryos
chorionic villus fingerlike projections of the chorion that extend into the uterus lining
embryo an organism in an early stage of development of plants and animals; in humans, a developing individual is referred to as an embryo from the second through eighth week of pregnancy
fetus a developing human during the period from the eighth week after fertilization until birth
gestation in mammals, the process of carrying young from fertilization to birth
human chorionic gonadotropin a hormone that is secreted by the placenta and that stimulates ovulation and secretion of progesterone or testosterone
implantation the process by which the newly fertilized egg in the blastocyst stage embeds itself in the lining of the uterus
labor the process by which the fetus and placenta come out of the uterus
umbilical cord
Created by: Addaleigh