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This article has been classified as relating to microanatomy.
Hello. I just happened upon this article and thought I could offer some constructive feedback to improve it. Although the structure and language used are appropriate throughout, I believe the link to the sole reference included does not work properly. Additionally, including a few more good references would perhaps lend the article more credibility. Consider making a mention of the sinoatrial node (pacemaker) to explain why cardiac muscle contractions are involuntary. The last statement defining a sarcomere seems redundant, and I figure it would make sense to merge it into the first sentence. It is an important piece of information, of course, but it simply comes across as being misplaced at the end of the article. There is also the possibility that expanding the information on sarcomeres and cardiac muscle properties would be helpful, though because there are already functional links to other articles to cover this it would likely be acceptable to leave it as is. As I stated before, the formatting is good and the article is free of bias, so those qualities are accounted for already. Rrock401 (talk) 03:05, 29 October 2015 (UTC)