The heart is a muscular organ found in all animals with a circulatory system. The heart pumps blood throughout the blood vessels by contractions. Cardiac means “related to the heart”, and comes from the Greek. The vertebrate heart is made up of cardiac muscle, it’s an involuntary striated muscle tissue found only in this organ, and connective tissue. The male’s heart weighs 9-11 ounces, and the female’s heart weighs about 11-12 ounces. A person’s blood pressure has major effects on their heart; high blood pressure is a major risk factor for a heart attack. If the heart can’t get enough oxygen, you will get chest pains which is called angina, and when your blood flow is blocked, it will result in a heart attack. Not only do heart attacks occur with high blood pressure, so does congestive heart failure. Congestive heart failure can be deadly and is a result of the heart being unable to pump enough blood for what your body needs. Homeostasis is your body’s ability to maintain an internal environment that is constant, no matter what is happening outside of it. The body has a lot of responsibility, like blood pressure, temperature, and things like glucose levels even. So, when the body’s blood pressure is high, or even low, it means that your body’s homeostasis or balanced state has become unbalanced.
Homeostatic Regulation of Blood Pressure , 2012. eHow.com.http://www.ehow.com/about_5565094_homeostatic-regulation-blood-pressure.html#ixzz2FS7wlBON
SteadyHealth.2004 – 2011 Wesite: http://terms.steadyhealth.com/Heart_morphology NHLBI. 2012.Website:http://www.nhlbi.nih.gov/hbp/hbp/effect/heart.htm