Question

The process of development in an embryo spans around 40 weeks, which is also considered the gestation period. With respect to this, the formation of heart takes place approximately in the

• A. fourth month
• B. fourth week
• C. second month
• D. third month

Answer 1

The correct option is B fourth week

The duration of pregnancy is known as the gestation period. In humans, the gestation period is about 40 weeks or 9 months long. This duration is divided into 3 trimesters. Each trimester consists of 3 months. After gastrulation, the different organs and organ systems begin to develop in the embryo. In the fourth week of development, the heart is formed.
In the second week of development, implantation of the embryo into the endometrium of the uterus takes place. Gastrulation occurs mostly in the third week.
In the second month of embryo development, limbs and digits begin to develop.
In the third month, the placenta becomes fully functional and takes over the charge of hormone production to sustain pregnancy.