Transcript of "Life Science 2.1 : The Cardiovascular System"
Life Science : Chapter 2<br />Circulation and Respiration<br />
Life Science : 2.1<br />The Cardiovascular System<br />
Objectives:<br />Listfive main parts of the cardiovascular system, and describe their functions.<br />Describe the two types of circulation of blood in the body.<br />List four cardiovascular problems.<br />
Your Cardiovascular System<br />The cardiovascular systemconsists of :<br />The heart and the three types of blood vessels that carry blood throughout your body.<br />The blood vessels<br />Arteries<br />Capillaries<br />Veins<br />Carry blood pumped by the heart.<br />
The Heart<br />Cardiac Muscle<br />Your heart is an organ made mostly of cardiac muscle tissue. <br />It is about the size of your fist and is almost in the center of your chest cavity.<br />
Blood Vessels<br />Arteries <br />Blood vessels that carry blood away from the heart and to the body’s organs.<br />Capillaries <br />Tiny blood vessels that allow the exchange between body cells and blood.<br />Veins <br />Blood vessels that carry blood back to the heart.<br />
Two Types of Circulation<br />Pulmonary circulation<br />The flow of blood from the heart to the lungs and back to the heart through the pulmonary arteries, capillaries, and veins.<br />Systemic circulation <br />The flow of blood from the heart to all parts of the body and back to the heart.<br />
Cardiovascular Problems<br />Atherosclerosis<br />Happens when cholesterol builds up inside of the blood vessels. <br />Major cause of heart diseases.<br />
High Blood Pressure <br />Hypertension<br />Abnormally high blood pressure.<br />The higher the blood pressure, the greater the risk of a heart attack, heart failure, kidney disease, and stroke.<br />Heart Attacks and Heart Failure<br />A heart attack happens when heart muscle cells die and part of the heart muscle is damaged.<br />Heart failure happens when the heart cannot pump enough blood to meet the body’s needs.<br />
A particular slide catching your eye?
Clipping is a handy way to collect important slides you want to go back to later.