A woman who carries the baby of another woman is called a surrogate. The egg is artificially inseminated in the woman for this purpose.

Newborn babies do not have kneecaps. Instead, they have cartilage that later transforms into a kneecap as they grow.

A healthy woman bearing a normal-sized fetus, with an average birth weight of about 3.3 kg (7.2 lbs.), will increase her blood plasma volume by an average of about 1250 ml (42 fl. oz), which is 45% more blood plasma in average.

The longest pregnancy was recorded in 1945, when a lady named Beulah Hunter, aged 25 years, gave birth after 375 days of pregnancy.

A baby can sense light when the pregnancy enters the 15th week, which lies in the second trimester. During this time, the baby starts developing taste buds as well.

Pregnancy is also known as gestation. It is defined as the time takes for an offspring to develop fully inside a woman’s uterus.

By the fourth week of pregnancy, the baby develops a heartbeat known as an embryonic heartbeat. As compared to an adult’s heartbeat, it is twice as fast.

For a woman of normal weight, the average weight during pregnancy is 25–40 pounds (11–18 kg). It might vary slightly if the woman is overweight or underweight.

Cesarean delivery or C-section is when the baby is delivered through surgical means via incisions in the uterus and the abdomen.

Babies develop fingerprints during the 13th week of pregnancy, which is at the end of the first trimester of pregnancy.