Fetal Development and Infancy

True or False: A zygote has 23 chromosomes in total.

• True

• False

Tags

NGSS.HS-LS3-1

This stage of development before birth happens between 9 weeks and 9 months of pregnancy.

• embryo

• fetus

• zygote

• placenta

If a mother drinks alcohol during pregnancy, this can lead to severe damage to the offspring in the form of _______.

• Fetus Dystrophy Disorder

• Fetal Cramping

• Downs Syndrome

• Fetal Alcohol Syndrome

For how long after fertilization is the developing offspring still considered an embryo?

• 3 weeks

• 5 weeks

• 8 weeks

• 10 weeks

When an egg is first fertilized it is known as 

• a nucleus
• an embryo
• a zygote
• a fetus

When the blastocyst attaches to the lining of the uterus, this is known as

• fertilization
• ovulation
• implantation
• mitosis

Pregnancy is divided into three_________.

• Trimesters
• Periods
• Months

What results when a fertilized egg implants in a location other than the uterus?

• Preeclampsia

• Ectopic pregnancy

• Stillbirth

• Miscarriage

What structure protects and cushions the fetus throughout its prenatal development?

• amniotic sac and fluid
• placenta
• umbilical cord
• vagina

Lactation is the

• fusing of egg and sperm
• attachment of the zygote to the uterine wall
• contractions of the uterus in preparation for childbirth
• releasing of milk to the newborn