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Baby’s Rapid Growth: Week 11 Development And Physical Changes

The eleventh week of pregnancy is a crucial time in the growth and development of the developing fetus. The soon-to-be parents must have valuable insights into their baby’s changes during this crucial period. This article will explore the developments occurring in the 11th week of pregnancy, focusing on the baby’s size and the formation of essential physical features. Let us jump into the fascinating world of fetal growth, from the baby’s head size to the teeth buds and formation of fingernails and toenails.

Your baby is rapidly developing at this stage, and the excitement is indescribable as its tiny form takes shape. Although still only about the size of a fig, your little one’s physical features are starting to emerge. From tiny fingers and toes to delicate facial features, the beauty of your baby’s growth is truly wonderful. Let’s explore what is happening in Week 11 and celebrate your growing baby’s size and physical attributes.

1. Baby’s Head is Nearly Half the Size of the Body

The baby’s head is one of the most noticeable developments in the 11th week of pregnancy. By this week, the baby’s head is almost half the size of its whole body.

a. Brain Growth and Complexity


The baby’s brain is rapidly developing and becoming more complex. Neurons are forming connections, allowing the brain to control various bodily functions.

b. Facial Features

The baby’s face keeps getting more defined. The eyes have formed completely, and even though the eyelids are stuck together for now, they will open soon..

c. Ears and Earlobes


The ears are well-defined. During this week a separation from the baby’s head is clearly visible with the earlobes becoming more prominent. 

d. Mouth and Tongue

The baby’s mouth is formed, and the tongue begins to develop. This will soon start contributing to swallowing reflexes.

2. Development of Teeth Buds

During the 11th week, the development of teeth buds lays the foundation for your baby’s future dental health.

a. Tooth Formation

Tiny tooth buds form under the baby’s gums. This will be eventually developing into primary teeth as your baby grows. 

b. Formation of Enamel and Dentin

Enamel, the hard outer layer of teeth, and dentin, the calcified tissue beneath the enamel, both begin to form and take shape. 

c. Importance of Prenatal Dental Care

Prenatal dental care and good oral hygiene are extremely important during pregnancy. This will help in the baby’s future dental health.

3. Formation of Fingernails and Toenails

During the 11th week, the baby’s fingers and toes rapidly develop, forming fingernails and toenails.

a. Nail Beds

The nail beds are forming, and tiny nail plates are beginning to develop on the fingers and toes.

b. Protective Function


Fingernails and toenails serve a protective function for sensitive fingertips. As your baby will grow, toes will play an active role in sensory perception.

c. Nail Growth

The nails will keep growing for the remainder of the pregnancy. It will eventually harden in the preparation for birth.

4. Baby’s Size and Proportion

By week 11, the baby’s size has increased significantly. This will result in the body taking on more recognizable proportions.

Finger and Toe Formation

a. Size of the Baby

At 11 weeks, the baby is approximately 1.6 to 2.4 inches long, comparable to the size of a pear. 

b. Proportions

The baby’s head is still proportionally large compared to the rest of the body, but the body is elongating and becoming more aligned.

c. Limb Movement

Although the mother may not feel it yet, the baby can make small, uncoordinated movements with its limbs at this stage. 

5. Maternal Changes and Preparing for the future future

When it’s Week 11, moms-to-be go through important changes in their bodies and start getting ready for what’s coming in the future.

a. Maternal Changes

Expectant mothers may have more energy and fewer early pregnancy symptoms like morning sickness by this point..

b. Prenatal Care

Preconception Checkup

Regular prenatal check-ups and following the doctor’s guidance is essential for the baby’s healthy development.

c. Emotional Bonding

Parents may feel a stronger emotional bond with their baby as they see its growth and development progress.

Week 11 of pregnancy is exciting for parents-to-be and their growing baby. The baby’s head is nearly half the size of its body and physical features, such as teeth buds, fingernails and toenails begin. The mother’s body also adapts to the changes, making prenatal care increasingly important. The journey to parenthood is beautiful. As your baby continues to grow and develop, the excitement and anticipation for the future continues to grow along with it.

This article is approved by Dr. Shobha Gupta Medical Director,  Gynecologist and IVF Specialist from Mother’s Lap IVF Centre.

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