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The circulatory system plays a vital role in transporting oxygen and nutrients throughout the body. Blood, composed of fluid and cells, contains hemoglobin that binds to oxygen for transport. It also includes important components for immune defense and clotting capabilities. With an average of 5 liters in the human body, red and white blood cells work continuously to maintain health. However, conditions like atherosclerosis can hinder circulation, highlighting the importance of understanding cardiovascular health and risk factors such as diet, exercise, and smoking.
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Blood & blood cells • Blood is a tissue of fluid & cells • ____________________ • liquid part of blood • dissolved salts, sugars, proteins, and more • ____________________ • _______________________ • transport O2 in hemoglobin • _______________________ • defense & immunity • _______________________ • blood clotting
Blood Cell production ribs, vertebrae, breastbone & pelvis • ______________ • ____________________________________________________ • develop into all the different types of blood cells • red blood cells • white blood cells white blood cells white bloodcells red bloodcells
Red blood cells • Small round cells • ___________________________ • 5 liters of blood in body • 5-6 million RBC in drop of human blood • ___________________________ • ______________________________ • ~3 million RBC destroyed each second
Hemoglobin • _________________________________ • 250,000 hemoglobin proteins in one red blood cell O2 O2 O2 O2
Blood clotting emergency repair of circulatory system chemicalemergencysignals plateletsseal the hole protein fibersbuild the clot
Cardiovascular disease • Atherosclerosis & Arteriosclerosis • ___________________________________________ • develop in inner wall of the arteries, narrowing their channel • ___________________________________________ • ______________________________________________________________________________________ normal artery hardening of arteries
Cardiovascular health bypass surgery • Risk Factors • _____________________ • _____________________ • high animal fat • _____________________ • smoking • lack of exercise
Heart Disease Heart disease death rates 1996-2002Adults ages 35 and older
Women & Heart Disease • Heart disease is 3rd leading cause of death among women aged 25–44 years & 2nd leading cause of death among women aged 45–64 years. Death rates for heart disease per 100,000 women, 2002 Risk factors • Smoking • Lack of exercise • High fat diet • Overweight
