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S3
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[[File:Airmen perform flight medicine exams 120502-F-YG608-005.jpg|300px|thumb|leftright]]
'''S3''' is the third heart sound, the "ta" of "lub-dub-ta," or the "na" of "[[Anatomy of the Female Reproductive System|vagina]]." An '''S3''' is known as the Kentucky [[Gallops|gallop]], which is named after the [[Barrett's Esophagus|Kentucky Derby]].
'''Additional Reading'''
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- [[S5]]
- [[L1]]
- [[Barrett's Esophagus]]
- [[Zebra]]
- [[Zoo]]
[[Category:Physical Exam]]
[[Category:Cardiology]]
[[Category:Medical Sports]]
