The embryo
A) refers to the baby-to-be from weeks 3 to 8.
B) is the single-cell fertilized ovum.
C) lives most of its life in the fallopian tube.
D) refers to the fetus during the second trimester.

Question

Quizplus · Accepted Answer

The embryo refers to the developing baby from weeks 3 to 8 of pregnancy when major organ systems are forming.

Answer: B
 The single-cell fertilized ovum is also known as a zygote, which later undergoes cell division and becomes an embryo.

Answer: C
 The embryo implants in the uterus after traveling through the fallopian tube but does not live in the tube itself.

Answer: D
 The fetal stage begins around week 9 and lasts until birth. The second trimester is weeks 13-28, during which time the fetus is undergoing continued growth and development rather than being called an embryo.

The Embryo