Birth Defects/Prenatal Development-Modified

During which stage of pregnancy does a fetus grow hair, eyelashes, and eyebrows?

• Conception

• Second trimester

During which stage of pregnancy does a pregnant woman typically have a change in posture?

• Third trimester

• Conception

After a fertilized ovum attaches itself to the lining of the uterus, it is called a/an:

• blastocyst.

• embryo.

During which stage of pregnancy does morning sickness usually begin?

• Conception

• First trimester

During which stage of prenatal development are all organs first present?

• Conception

• First trimester

During which stage of pregnancy does a pregnant woman usually gain a total of two-to-four pounds?

• Conception

• First trimester

During which stage of pregnancy does a pregnant woman usually begin to have increased urination due to increased hormone levels and pressure on her bladder?

• Conception

• First trimester

When will a baby be a boy?

• An ovum unites with a sperm and then divides into two zygotes.

• An ovum unites with a sperm carrying a Y chromosome.

What happens during conception?

• Ovum and sperm unite after intercourse

• Ovum attaches to lining of uterus

What is the size of the zygote during the first month of pregnancy?

• Pinhead

• 1/4 inch long