Sexual Reproduction in Humans

What is formed when a sperm and ovum fuse together?

Which stage follows the zygote division in human sexual reproduction?

What is the primary function of the placenta during pregnancy?

At what point is the developing embryo referred to as a foetus?

Which of the following structures is responsible for connecting the embryo to the mother's body?

Sexual Reproduction in Humans

Fertilization occurs when sperm and ovum fuse inside the female's body.
The resulting zygote divides repeatedly to form a ball of cells (embryo).
The embryo develops into tissues.
The embryo attaches to the uterus wall, forming the placenta.
The embryo receives nutrients from the mother's blood through the placenta.
Major organs (hands, legs, head, eyes, ears) form after 12 weeks.
Development continues, and a baby is born after 36 weeks.
The gestation period in humans is approximately 280 days.

Stages of Development

Zygote: The initial cell formed from the fusion of sperm and egg.
Embryo: The developing organism after the zygote.
Foetus: The developing human after the embryo stage (after 12 weeks).

Placenta

A structure that develops where the embryo attaches to the uterus wall.
Enables the exchange of nutrients and waste products between the mother and embryo.

Gametes

Sperm (male gamete): Produced in the testes.
Ovum (female gamete): Produced in the ovaries.

Sexual Reproduction

The process of creating offspring using gametes from two parents.

Explore the intricate process of sexual reproduction in humans, from fertilization to birth. This quiz covers key stages such as zygote, embryo, and fetus development, as well as the role of the placenta and gametes. Test your understanding of human gestation and the formation of major organs.