Charlotte Lozier Institute

Phone: 202-223-8073
Fax: 571-312-0544

2776 S. Arlington Mill Dr.
Arlington, VA 22206

Get Notifications

Sign up to receive email updates from Charlotte Lozier Institute.

Ear Formation

Dive Deeper
(Image Credit: Science Source)

Around 8 weeks gestation, the outer ear starts as a groove on the neck, just below the mouth. Over the next two weeks, the outer ear migrates to its final position and becomes shell shaped.1 From there, the outer ear forms more folds, reaching a more mature shape by 20 weeks.2 The ear’s shape helps a person localize sounds; and since every ear shape is slightly different, everyone’s brain has made slightly different connections so that people have trouble telling the direction of sounds that are recorded inside someone else’s ear.3 Oddly enough, the outer ear actually continues to grow for a person’s entire life.4

The ear at four months gestation. (Image Credit: Priests for Life)