Cooper’s Heart Aug 26, 2008
Friday, August 22, 2008 Edition. Today's Weather Thomaston, GA. (Thomaston Times, GA)
Wanna build scorpion-sting immunity? Get stung by scorpions Apr 15, 2007
Your heart beats because it has something called the SA node that regulates the electrical charge that triggers your heart muscle's contractions. Sneezing doesn't have anything to do with that, and the fact that your husband believes this makes him kind of a sillyhead. (AZCentral -- News)
Some Heart Disease Treatments Could Be Increasing Heart Attack Risk Mar 19, 2007
The electrical signal is generated through an influx of calcium into the cells in the SA node, causing a change in voltage which creates the current ... As members of the sports science group in Leeds' Faculty of Biological Sciences, Drs Lancaster and Jones are now looking at whether exercise training is able to reduce the loss of the calcium channels in the SA node. (Science Daily)
Researchers Move Biotechnology Closer To Replacing Electronic Pacemakers Aug 23, 2006
By getting heart muscle cells to produce bioengineered HCN channels, Li and his colleagues were able to reconstruct the SA node of the heart in pigs with implanted electronic pacemakers. The SA node is normally located on the right atrium, the upper right chamber of the heart that receives deoxygenated blood from the body ... In the current study, researchers used radiofrequency ablation to remove the SA nodes in pigs' hearts. (Science Daily)
Heart flutter and blood pressure pills May 29, 2006
A structure called the SA node in the upper right-hand corner of the heart provides the electrical impulse that controls the heart muscle's rhythmic contractions ... The SA node can be influenced by stress and hormones, part of the evolutionary mechanism that helped our ancestors survive in a prehistoric world when "fight or flight" could easily be a life or death decision. (Mail Tribune, OR)
