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The heart is a hollow, muscular organ in vertebrates responsible for pumping blood through the blood vessels by repeated, rhythmic contractions, or a similar structure in annelids, mollusks, and arthropods. The term cardiac (as in cardiology) means "related to the heart" and comes from the Greek καρδιά, kardia, for "heart."
early development
At 21 days after conception, the human heart rate begins beating at 75-80 beats per minute and accelerates linearly for the first month of beating.The human embryonic heart (EHR) begins beating at approximately 21 days after conception, or five weeks after the last normal menstrual period (LMP), which is the date normally used to date pregnancy. The human heart begins beating at a rate near the mother’s, about 75-80 beats per minute (bpm). It then accelerates linearly for the first month of beating, peaking at 165-185 bpm during the early 7th week, (early 9th week after the LMP). This acceleration is approximately 3.3 bpm per day, or about 10 bpm every three days, an increase of 100 bpm in the first month. *
After peaking at about 9.2 weeks after the LMP, it decelerates to about 150 bpm (+/-25 bpm) during the 15 week after the LMP. After the 15th week the deceleration slows reaching an average rate of about 145 (+/-25 bpm) bpm at term. The regression formula which describes this acceleration before the embryo reaches 25 mm in crown-rump length or 9.2 LMP weeks is:
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Almost had a heart attack just now.
adamgourley (Adam Gourley) Tue, 29 Dec 2009 09:14:46 -0000
Almost had a heart attack just now.
1 Cor 2:9 Eye has not seen, nor ear heard, nor have entered into the heart of man the things which God has prepared for those who love Him.
cuki_doh (Kelsey R) Tue, 29 Dec 2009 09:13:29 -0000
1 Cor 2:9 Eye has not seen, nor ear heard, nor have entered into the heart of man the things which God has prepared for those who love Him.
Iight i c u but im fina go harder thn dat memba da prt bout da heart atac ima do it so it scar it lyk my tat
lilmzladi (ranice jones) Tue, 29 Dec 2009 09:10:08 -0000
Iight i c u but im fina go harder thn dat memba da prt bout da heart atac ima do it so it scar it lyk my tat
balas budi klo gak salah soalnya dia dipilih seunggi di champagne RT @yvanchristian: @rdwibowo itu champagne yang dulu...di Strong Heart
rdwibowo (Rinan D Wibowo) Tue, 29 Dec 2009 08:52:07 -0000
balas budi klo gak salah soalnya dia dipilih seunggi di champagne RT @yvanchristian: @rdwibowo itu champagne yang dulu...di Strong Heart
December 29, 2009, 6:52 pm heart rate 74
aliveheart (Alive Heart) Tue, 29 Dec 2009 08:52:07 -0000
December 29, 2009, 6:52 pm heart rate 74
@robromoni You've been voted the sexiest sweet heart ever? http://myloc.me/2rmgw
johnnyqb (Johnny Cumslut) Tue, 29 Dec 2009 08:48:07 -0000
@robromoni You've been voted the sexiest sweet heart ever? http://myloc.me/2rmgw
BebeLeStrange's Heart And Lovemonger Site - Includes news, multimedia, midi files, photos, mpg clips, reviews of concerts, and history.
Meta Description: [ A mecca for fans of Ann and Nancy Wilson, Heart, and The Lovemongers. Contains large ann and nancy wilson photo gallery, midi, wavs, mpg video files, and complete updated news and information. ]
Dreamboat Annie: The Heart Discussion list - Mailing list exists to provide a space for discussion of the band Heart.
Entertainment Ave: Heart featuring Ann Wilson - Review of a concert at The House of Blues in Chicago, Illinois.
Meta Description: [ Entertainment Ave! The Concert Hall - A concert review of Heart featuring Ann Wilson - June 18, 1998 - The House of Blues - Chicago, IL. ]
Heart Linker, The - Links and news about the group, and related projects.
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Heart Rokz - Fan site includes a timeline, discography and photos.
Heart-music.com - Official site includes news, tour dates, journal, photos, biography, discography, and video clips.
OG's Heart Pages - Fan site includes pictures and information on Ann Wilson, Nancy Wilson, Jupiters Darling, and former band members.
Meta Description: [ Site dedicated to Heart and the the fans of Heart, mongers. Pictures and info on Heart as well as some notes on Heart's new CD, Jupiters Darling, due out in the spring. Pages on Ann wilson, Nancy Wilson and former band members such as Howard Leese.
]
The Heart Gallery - Includes lyrics, year-by-year photo gallery, web forum, and links to related sites.
Meta Description: [ www.theheartgallery.com - a graphical retrospective of the Seattle based rock band, HEART. ]
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