Fetal Development

When an egg is first fertilized it is known as 

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

Where does the implantation occur and the zygote develop?

• in the uterus
• in the ovary
• in the vagina
• in the fallopian tube

The developing embryo is fed by its mother’s blood through a tissue called the

• placenta
• vagina
• amnion
• uterus

What is the first organ that begins to function in the developing embryo?

• the lungs
• the limbs
• the brain
• the heart

The developing embryo is connected to the placenta by

• the spinal cord
• the umbilical cord
• the amniotic fluid
• the developing nerves

Week 9/ 10 the baby acquires features and is then referred to as

• an embryo
• a fetus
• a zygote
• a newborn

Approximately how many weeks after fertilization is baby is ready to be born ?

• 17 to 24
• 24 to 36
• 22 to 48
• 40 to 42

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

• amniotic sac and fluid

• placenta

• umbilical cord

• vagina

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