Your Baby: Week 6

fetal development

Hotspot: 275,185

The neural tube forms; it develops into the brain, spinal cord, and backbone.

Hotspot: 360,370

Your baby's heart and lungs start to develop.

Hotspot: 260,380

Your baby's heart starts to beat.

Hotspot: 235,550

Your baby is big enough to measure: 0.16 in. A due date can be determined!

WebMD Medical Reference Reviewed by Traci C. Johnson, MD on June 04, 2016
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