Anatomy
Which organ is responsible for pumping blood throughout the body?
The heart.
What gas do red blood cells transport throughout the body?
Oxygen.
During which life stage does resting heart rate start high and then decrease?
Infancy and childhood.
What is the name of the condition where the heart suddenly stops pumping blood effectively?
Cardiac arrest.
About how many times does your heart beat every day?
About 100,000 times.
What are the three main types of blood vessels?
Arteries, veins, and capillaries.
What is the main function of the heart?
To pump blood and deliver oxygen and nutrients while removing carbon dioxide and other wastes.
What happens to fetal heart shunts at birth?
They fully close.
Name one condition that can cause cardiac arrest.
Coronary artery disease, a heart attack, abnormal heart rhythms, cardiomyopathy, or severe valve problems.
Your heart is approximately the size of what?
Your fist.
What are the four chambers of the heart?
Right atrium, left atrium, right ventricle, and left ventricle.
Which blood vessels carry blood away from the heart?
Arteries.
During which life stage does the heart reach its full adult size and peak capacity?
Adolescence and adulthood.
What is one possible sign of cardiac arrest?
Sudden collapse, loss of consciousness, no normal breathing, or no normal pulse.
Can your heart continue beating outside your body for a short amount of time?
Yes.
Which blood vessel has walls that are only one cell thick, allowing substances to be exchanged?
Capillaries.
What is the function of platelets?
They help form blood clots.
What happens to arteries as a person gets older?
They become stiffer and thicker, which can raise blood pressure.
What does AED stand for, and what does it do?
Automated External Defibrillator. It checks the heart's rhythm and can deliver an electrical shock when appropriate.
Name one fact about the length of your blood vessels.
They are extremely long.
What are the four valves of the heart?
Tricuspid, pulmonary, mitral, and aortic valves.
How do the cardiovascular and respiratory systems work together?
The heart pumps blood to the lungs, where oxygen enters the blood and carbon dioxide is removed. Oxygen-rich blood is then transported throughout the body.
Name two cardiovascular changes that can occur during the senior years.
Reduced maximum pumping capacity, lower maximum heart rate, thicker valves, or a decline in pacemaker cells.
Name three risk factors for cardiac arrest listed in the presentation.
Coronary artery disease, previous heart attack, heart rhythm problems, high blood pressure, high cholesterol, smoking, diabetes, or obesity.
Which organ works continuously to pump blood and support every other organ in your body?
The heart.