Pregnancy is an exciting journey with many changes in you and your growing baby. Each semester marks a new dawn in this journey, with new milestones for you and your baby. One of the ways you can keep up with this journey and monitor your well-being and that of your baby is through regular ultrasounds. The 11-week ultrasound can reveal quite a bit about you, your baby, and how the pregnancy is progressing.
An 11th-week ultrasound falls under the category of a dating scan and is mainly used to help the healthcare provider determine your due date. If you have an ultrasound at this time, it is exciting because it is right around the time your baby is transitioning from an embryo into a foetus from around the ninth week.
Foetal Development at an 11-Week Ultrasound
If you choose to take your ultrasound scan at 11 weeks, you may notice the following physical features in your baby:
- A well-formed face
- Long thin limbs
- Tooth buds
- Fingernails and toenails
The foetus may have eye lenses and eyelids formed at this point, but they will remain closed until the 28th week. Still, the head is larger than the rest of the body—nearly half of the crown to rump length. But that will also change as the baby experiences a growth spurt in the coming weeks.
During the scan, the technician will measure the circumference of the head to ensure the foetus is within the expected parameters. This can also be used to predict and manage obstetric problems.
Genitalia begins to form this week too. By the end of the week, the genitalia will have formed into a clitoris and labia majora or a penis. They will not be developed enough for the sonographer to distinguish the baby’s gender.
At 11 weeks, the bone inside becomes stronger and harder, and the skin develops more layers, though it is still translucent.
The jaws are also starting to harden, and they have their first tooth buds, which will grow into tiny baby teeth. Their vocal cords are also not far behind.
Foetal Movement on a Week 11 Ultrasound
By 11 weeks, your baby starts having sleep and wake cycles. These are usually about 5 and 10 minutes long. You might even wake them up if you cough.
During the ultrasound, you may be able to see them wiggle. At this stage, the scan report will indicate that the foetus was active or had gross body movements. The technician will charge these movements because it has been determined that they also reflect how the nervous system develops.
Despite their rapid growth, babies are barely 1.5 to 2 inches long and weigh only a few grams. They’re still tiny, and you won’t be able to feel their jerky gestures yet. But you will start feeling their kicks as they add more weight and strength.
Your Baby’s Organs at an 11-Week Ultrasound
A week 11 ultrasound aims to determine gestational age and fetal viability. However, several of the baby’s organs are also developing:
Lungs
The development of lung tissue is well underway. The trachea, the bronchi, and some arteries and capillaries are developed, as are bronchioles, ducts, and even more arteries and capillaries.
However, the foetus is still getting nutrition and oxygen through the circulatory system and is also building its supply.
Pancreas
The pancreas develops early in the embryonic stage, but by 11 weeks, it starts producing insulin. The intestines begin developing in the embryonic stage and have muscles. In a few weeks, intestinal mucosa will develop in preparation for the day they’ll digest food independently.
Skin
The skin starts developing as early as 4 weeks. It has two distinct layers, and at 9 weeks, the keratinisation process begins. At an 11-week ultrasound, your baby’s skin is more opaque and tiny hair follicles appear below the skin’s surface.
Conclusion
An 11-week ultrasound might still be within the first trimester of your pregnancy. However, the scan would have plenty to look forward to and information about, which makes it an exciting experience.
