Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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. Your email address is only used to allow you to reset your password. See 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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Chapter 4

Chapter 4 Human development

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 an egg.
Conception The union of the ovum and the 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 towards the ovary.
Uterus The organ in which the baby develops and is protected by 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 in a person unless both genes for that 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 or prenatal development, which lasts about two weeks after conception.
Amnion A fluid-filled sac that surrounds that 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 prenatal development, which lasts about six weeks.
Embryo The 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 the pregnancy, lasts from about nine weeks after contraception until birth.
Fetus The term used to describe a baby in the fetal stage of development.
Quickening Movement 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, usually could be the 28th week of pregnancy.
Created by: h.bass
Popular Family and Consumer sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards