The Embryo

Question

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.

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.