Question 1:

Where does fertilization of an egg by sperm usually occur?

Explanation: Fertilization of an egg by sperm usually occurs in the fallopian tube. After ovulation, the egg is released from the ovary and travels through the fallopian tube, where it may encounter sperm and become fertilized.

Question 2:

What is the approximate duration of a typical human pregnancy?

Explanation: The approximate duration of a typical human pregnancy is 9 months. Pregnancy is divided into three trimesters, each lasting approximately 3 months.

Question 3:

What is the name given to the developing human organism from the eighth week of gestation until birth?

Explanation: The name given to the developing human organism from the eighth week of gestation until birth is fetus. Prior to the eighth week, it is referred to as an embryo.

Question 4:

Which hormone is responsible for maintaining the pregnancy and preventing menstruation?

Explanation: The hormone responsible for maintaining the pregnancy and preventing menstruation is progesterone. Progesterone is produced by the corpus luteum in the ovary and later by the placenta.

Question 5:

Where does implantation of the fertilized egg typically occur?

Explanation: Implantation of the fertilized egg typically occurs in the uterus. After fertilization, the developing embryo travels down the fallopian tube and implants itself into the lining of the uterus.