|

Pregnancy: Weeks 15-18

In the fourth month, your baby's face looks more human. Her eyes, which started out on the sides of her head, have moved closer together. Her very thin skin is covered with hair (which usually disappears before she's born).

A human fetus at 18 weeks. At this time, your baby will have grown to about 5 inches Fetus long and weigh 6 ounces.

Week Number 15

  • Blood vessels can easily be seen through the skin, which is very thin and translucent.
  • The legs are longer than the arms.

Week Number 16

  • The fetus can make a fist, open its mouth, move its lips, and swallow.
  • The fetus might suck its thumb.
  • Fine lanugo hairs can be seen on the head.
  • The nails are well formed.
  • The heart is beating 117 to 157 times per minute.
  • The stomach is producing digestive juices.
  • The kidneys are producing urine.

Week Number 17

  • Brown fat begins to form.
  • The rapid growth rate begins to slow down.
  • White fatty material begins to enclose the nerve fibers of the spinal cord.
  • Between the 17th and 20th weeks hearing develops; the fetus can hear internal-organ and outside-world sounds.

Week Number 18

  • The skeleton can be clearly outlined on x-rays of the fetus.
  • Ears stand out from the head.
  • Lanugo covers the entire body.
Back to Weeks 11-14 Continue to Weeks 19-22
|

excerpted from:

Excerpted from The Complete Idiot's Guide to Pregnancy and Childbirth © 2004 by Michele Isaac Gliksman, M.D. and Theresa Foy DiGeronimo. All rights reserved including the right of reproduction in whole or in part in any form. Used by arrangement with Alpha Books, a member of Penguin Group (USA) Inc.

To order this book visit Amazon's website or call 1-800-253-6476.


Pregnancy Day by Day

Tell us your due date to receive our daily newsletter and find out what is happening in this day of your pregnancy!

Already a member? Log-in here

Name of the Day

Quick Polls

Q: Has your relationship with your partner changed since becoming pregnant?

Yes, we're closer than ever.

Yes, it's put a strain on us.

No, nothing's changed.

View Results

highlights

Create Your Baby Registry with Target
Do you have everything you need to care for your new bundle of joy? Create your Target baby registry today!

Birth Control After Baby: 5 Options for Breastfeeding Moms
Find out which non-permanent birth control methods are safest for breastfeeding moms, and discuss your options with your doctor to find one that works for you and your partner.

12 Pregnancy Superfoods
Your body and growing baby have specific nutritional needs right now. Find out the pregnancy superfoods that will satisfy your prenatal cravings and nourish you and your baby.

Top 100 Baby Names of 2015
Want to see which baby girl names and boy names are hot in the U.S. right now? Check out these lists from the S.S.A., and click on the names to see their meanings!

stay connected

Sign up for our free email newsletters and receive the latest advice and information on all things parenting.

Enter your email address to sign up or manage your account.

Facebook icon Facebook icon Follow Us on Pinterest

© 2000-2015  Sandbox Networks, Inc. All Rights Reserved.