Chapter 36, Problem 30A

Summary Introduction

Introduction:

Pregnancy happens when a sperm fertilizes an egg after it is released during ovulation. The fertilized egg then heads down to the womb, where it is placed. A conception ends in successful implantation. A maximum pregnancy lasts on average 40 weeks.

Answer to Problem 30A

Correct answer:

The correct answer is option (B) placenta.

Explanation of Solution

Explanation/justification for the correct answer:

Option (B) placenta. The structure labeled as A is the placenta. The placental stage is the part of labor where it last from the time of delivery of the baby to the delivery of the placental and fetal membrane. So, this is the correct option.

Explanation for incorrect answer: 

Option (A) uterus. The structure labeled as A is the placenta. So, this is an incorrect option.

Option (C) fetus. The structure labeled as A is the placenta. So, this is an incorrect answer.

Option (D) cervix. The structure labeled as A is the placenta. So, this is an incorrect option.