Question

Define foetus. After how many weeks of development, a human embryo is said to become a foetus ?

Answer 1

Answer:

A fetus or foetus is the unborn offspring of an animal that develops from an embryo. Following embryonic development the fetal stage of development takes place. In human prenatal development, fetal development begins from the ninth week after fertilisation and continues until birth.

Answer 2

Fetus:

• An unborn mammal is called as fetus.
• In human beings, an unborn human after eight weeks of conception is called fetus.

Development of a human embryo:

• The male gamete and female gamete undergoes fertilisation in female body and forms zygote.
• The zygote divided into embryo. The embryo is moved to uterus through oviduct. In uterus, the embryo is embedded in uterine lining. This process is called as implantation.
• The embryo starts to grow into baby through food and oxygen from uterine lining.
• After eight weeks, embryo grows into fetus. It has heart.
• Later, the fetus develops ear, nose, finger and eyes.
• After 38 weeks, complete development of baby takes place and the mother gives birth to the baby through vagina.