File:Fetal heartbeat 01.mp3

Fetal_heartbeat_01.mp3 ‎(file size: 225 KB, MIME type: audio/mp3)

Human Fetus (17 week) heart beat

The characteristic "lub-dup" sounds are associated with closing of heart valves.

The first sound (lub) occurs as atrioventricular valves close and signifies beginning of systole (contraction)

The second sound (dup) occurs when semilunar valves close at the beginning of ventricular diastole (relaxation)

Thanks to Debra Copeland, for providing fetal heart beat for public use.

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	18:16, 9 August 2010	(225 KB)	S8600021 (talk \| contribs)	==Human Fetus (17 week) heart beat== The characteristic "lub-dup" sounds are associated with closing of heart valves. The first sound (lub) occurs as atrioventricular valves close and signifies beginning of systole (contraction) The second sound (dup)

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