The Incredible Cardiovascular System How the <3 Works

Cardiovascular System = Circulatory System Made up of: Heart Blood Blood Vessels

The Heart Size of a fist. Location: Center of the chest (tipped slightly to the left). One big muscle. 4 chamber “double pump”. Normal Heart Rhythm: LUB DUBLUB DUB

The Heart Goes On……. Harder the <3 works the healthier it can become. Average Heart Rate: 72 Beats Per Min. (BPM) Range: bpm. Does anyone know how to check their pulse? People are born with heart defects. (Congenital Heart Defects) Can damage your heart with lifestyle choices. What are risk factors for heart disease?

Facts of the Heart…. Pumps 2,000 gallons of blood each day. Beats 4,000 times each hour; 10,000 times each day; 35 million times in a year!!!!!!!! Muscle that has both mechanical and electrical components. If both are NOT working = the body and brain CANNOT function. Electricity – causes your heart to pump and blood/nutrients to pump to the body.

Blood ……… Plasma – fluid part of blood; mostly water; yellowish, clear color. Red Blood Cells – carry oxygen and nutrients. White Blood Cells – fight infection, multiply as needed by the body. Platelets – clotting factor, gather at wound site. (they form scabs). Hemoglobin – carries iron in blood, gives blood the RED color. There are 12 pints of blood in adults. Live in high altitudes, have 2 more pints than in lower levels.

Blood Types

Blood Vessels Cardiovascular system is the network that delivers blood to every part of the body. If all the blood vessels were lined up end to end, they would stretch over 60,000 miles!!! 3 types: Arteries – carry oxygenated blood (rich with nutrients) away from the heart to the body. Veins – Carry deoxygenated blood back to the heart. In order for the blood to become oxygenated: each time you inhale oxygen is absorbed by your lungs and transferred into blood. This blood is sent to the heart. Capillaries – smallest and thinnest of blood vessels. Carry blood very close to cells of tissues of body to exchange gas, nutrients and waste products.

Heart Disease…… Aka Cardiovascular Disease. #1 cause of death for Americans Nearly 84 million American adults have some form of cardiovascular disease. 2,150 each day. (1 every 40 seconds). Any condition that negatively affects the heart’s ability to efficiently pump blood or the body’s ability to transport blood. Ex: Plaque buildup, stiffening of arteries, abnormal heart rhythms, heart failure, heart valve problems, heart attack and stroke. Preventable

Types of Heart Disease Congenital Heart Defects Different from Heart Disease Abnormality present at birth that prevents the heart from working correctly. Identified early in life. Can be fixed or treated (Corrective Surgery, Medicine).

Heart Attack v. Cardiac Arrest Heart Attack aka Myocardial Infarction.Myocardial Infarction Blood flow to the heart is blocked. “Circulation” problem. Occurs when blocked artery prevents oxygen-rich blood from reaching a section of the heart. Death of the heart muscle. Symptoms: Vary between men and women Not everyone experiences chest pain. Pain or discomfort in one or both arms, back, neck, jaw, abdomen. Shortness of breath. Nausea Cold Sweats Lightheaded.

Cardiac Arrest The heart malfunctions and suddenly stops beating. (Heart Quivers). “Electrical” problem. The electrical malfunction causes irregular heartbeat. CANNOT pump blood to the brain, lungs, and other organs. Death can occur within minutes without CPR or AED. *Heart Attack and Cardiac Arrest are linked: SCA can occur after a heart attack or during recovery*

CPR and AED Cardio Pulmonary Resuscitation. Cardio = of the heart Pulmonary = of the lungs Resuscitation = to bring back. CPR can double, even triple a person’s chance of survival and it’s easy to remember! AED – sends an electrical shock to the heart to reset it’s normal rhythm. Automated – talks back to you. External – Outside of the body Defibrillator – device that resets the heart.