Moro reflex

A newborn reflex. This reflex begins by extention of the baby's arms, fingers, and legs while arching their back and throwing their head back, then quickly bringing arms back into the chest with fists clenched. At times it resembles an attempt by the baby to embrace someone. It is present for 2-4 months and occurs when babies hear a sudden loud noise or feel like they are falling.

from beyond babyzone:
Use a Facebook account to add a comment, subject to Facebook's Terms of Service and Privacy Policy. Your Facebook name, profile photo and other personal information you make public on Facebook (e.g., school, work, current city, age) will appear with your comment. Comments, together with personal information accompanying them, may be used on BabyZone.com and other Disney media platforms. Learn More.
Real-mom dispatches from the Baby Zone
X

more in BabyZone

10 Excitingly Exotic Baby Names