Download the incredible cardiovascular system

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 DUB
The Heart Goes On…….
• Harder the <3 works the healthier it can become.
• Average Heart Rate: 72 Beats Per Min. (BPM)
• Range: 60-80 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.
• 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.