home > image collection a-z list > first trimester (4 weeks) picture
Image Collection: Pregnancy and Fetal Development
Change Category
Close
- All (560)
- Allergic Skin Disorders (31)
- Bites and Infestations (27)
- Medical Illustrations (101)
- Oral Health (22)
- Papules, Scales, Plaques and Eruptions (47)
- Sexually Transmitted Diseases (STDs) (12)
- Eye Diseases and Conditions (19)
- Pregnancy and Fetal Development (9)
- Bacterial Skin Infections (29)
- Noncancerous, Precancerous and Cancerous Tumors (56)
- Viral Skin Diseases (26)
Use Pill Finder
Find it Now
See Interactions
Pill Identifier on RxList
- quick, easy,
pill identification
Find a Local Pharmacy
- including 24 hour, pharmacies
Interaction Checker
- Check potential drug interactions
1. Picture of First Trimester (4 Weeks)
Copyright © Medical RF / Phototake -- All rights reserved.
First Trimester: The Baby at 4 Weeks
- Your baby's brain and spinal cord have begun to form.
- The heart begins to form.
- Arm and leg buds appear.
- Your baby is now an embryo and 1/25 of an inch long.
Related Topics
Stages of Pregnancy Slideshow
Reviewed by William C. Shiel Jr., MD, FACP, FACR on August 21, 2009
Image Source: Copyright © Medical RF / Phototake -- All rights reserved.
Text: Womenshealth.gov - Healthy Pregnancy: Stages of Pregnancy
Image Source: Copyright © Medical RF / Phototake -- All rights reserved.
Text: Womenshealth.gov - Healthy Pregnancy: Stages of Pregnancy
Guide to understanding the Image Collection Gallery categories:
From 
Pregnancy and Parenting Resources
- Get the Facts About Bottle Feeding
- Low Back Pain? It Could Be Your SI Joint
- Pregnancy Health News Sent to You