NEET BIOLOGY

Detailed explanation-1: -The average length of human gestation is 280 days, or 40 weeks, from the first day of the woman’s last menstrual period. The medical term for the due date is estimated date of confinement (EDC).

Detailed explanation-2: -Month 9 (weeks 33 through 36) The lungs are close to being fully developed at this point. The fetus has coordinated reflexes and can blink, close the eyes, turn the head, grasp firmly, and respond to sounds, light and touch. The fetus is about 17 to 19 inches long and weighs from 5 ½ pounds to 6 ½ pounds.

Detailed explanation-3: -Pregnancy is counted from the first day of your last menstrual period. This means an extra 2 weeks are counted at the beginning of your pregnancy when you aren’t actually pregnant. So pregnancy lasts 10 months (40 weeks)-not 9 months-because of these extra weeks.

Detailed explanation-4: -Baby’s Position: In month 9 of pregnancy, the baby remains in the head-down position with its head properly fit into the mother’s pelvis. This is the ideal position and makes the baby’s movement easier through the birthing canal at the time of delivery.

Detailed explanation-5: -Most pregnancies last 37 to 42 weeks, but some take longer. If your pregnancy lasts more than 42 weeks, it is called post-term (past due). This happens in a small number of pregnancies. While there are some risks in a post-term pregnancy, most post-term babies are born healthy.