Heart Health: How Does Heart Rate Change with Exercise?

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Introduction
The heart is an extraordinary structure that is the base of all human life. However, it similar to the uncomplicated functions of water pumps. As the heart beats, blood is distributed throughout the body using a network of blood vessels. The functions of the heart can be kept in regular and healthy conditions through exercise. Exercise has an effect on the blood that is circulating through the body. That circulating blood makes the heart desire more oxygen, causing the heart rate to increase rapidly to keep up with activity demand.
History of the Heart
The science and history of the heart can be traced back as far as the fourth century B.C. Greek philosopher, Aristotle, declared the heart to be the most vital organ in the body based on observations of chick embryos. In the second century A.D, similar ideas were later reestablished in a piece written by Galen called On the Usefulness of the Parts of the Body. Galen’s thesis was that the heart was the source of the body’s essential heat and most closely related to the soul. Galen made careful observations of the physical properties of the heart as well. He said “The heart is a hard flesh, not easily injured. In hardness, tension, in general strength, and resistance to injury, the fibers of the heart far surpasses all others, for no other instrument performs such continues, hard work as the heart”(Galen, Volume 1).
Furthermore, Aristotle and Galen’s theories contributed to the Renaissance revival of heart anatomy. This reawakening made it possible for physicians to indicate the basic arrangement of the heart. It became commonly accepted that the heart was divided into four parts: two ventricles (lower chambers that pump blood out) and two auricles (upper chamber that r...

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...and curiosity to seek more knowledge of what has not yet been discovered.

Works Cited

Citations http://umm.edu/health/medical/reports/articles/exercise.N.p.,n.d.Web.14 Mar.2014 http://www.uhs.umich.edu/caffeine.N.p.,n.d.Web.18 Mar.2014 http://www.heart.org/HEARTORG/GettingHealthy/PhysicalActivity/Target-Heart-Rates_UCM_434341_Article.jsp.N.p.,n.d.Web.17 Mar.2014 http://www.texasheartinstitute.org/HIC/anatomy/Anatomy.cfm.N.p.,n.d.Web.13 Mar.2014 http://umm.edu/health/medical/reports/articles/exercise.N.p.,n.d.Web.18 Mar.2014 http://my.clevelandclinic.org/heart/heart-blood-vessels/heart-facts.aspx.N.p.,n.d.Web.13 Mar.2014 https://www.stanford.edu/class/history13/earlysciencelab/body/heartpages/heart.html.N.p.,n.d.Web.17 Mar.2014
Galen, . (n.d.). On the Usefulness of the Body. (M. Tallmadge May, Trans.). N.p.: Cornell University Press. Retrieved March 25, 2014

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