Purpose & Background
What is the main purpose of the cardiovascular system?
Bring nutrients to cells and remove waste.
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True or False?
The heart is a muscle.
True.
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What do capillaries do?
Brings oxygen and nutrients to the tissues. They also remove waste products.
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What are the five common risks of cardiovascular disease in teens?
Smoking, Obesity, Physical Inactivity, High Cholesterol, and Hypertension.
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What is considered a low and fast heartbeat for adults?
Low is anything below 60 bpm and high is a resting heartbeat above 100 bpm.
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What do all of the cells in our body need?
They need oxygen.
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How many chambers are there in a human heart?
4 Chambers
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What is the function of blood?
Blood is used as a transport media for everything in the body.
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What is Hypertension?
High blood pressure
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What is usually the cause of coronary artery disease?
Fatty plaque containing cholesterol in your arteries.
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Give an example of an animal with a three chambered heart.
Amphibians [i.e Frogs]
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List the 4 main components of blood.
1) Red Blood Cells
2) White Blood Cells
3) Plasma
4) Platelets
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What does the aorta do?
It delivers oxygenated blood from the heart to the rest of the body.
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What is cholesterol?
A fat like substance called lipid that is found in all body cells.
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What is hypertension usually a result of?
Another disease such as heart or kidney disease.
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True or False?
Are there animals that have a three and a half chambered heart?
True
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What is the largest vein?
The Vena Cava
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What does the tricuspid valve do?
It prevents the blood from going back when pumped from the right atrium to the right ventricle.
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What is the difference between systolic and diastolic when talking about blood pressure?
Systolic: force of blood flow when the heart is beating
Diastolic: force of blood flow when the heart is resting
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What lifestyle changes can prevent and treat most cardiovascular diseases?
Exercise, changes in diet, and controlling weight and other underlying conditions such as diabetes.
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What is the difference between the open circulatory system and the closed circulatory system?
The blood is allowed to leave the blood vessels to do their job in the open system while the blood has to stay in the blood vessels for the closed system.
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What are the names of the 4 valves in the heart?
Pulmonary Valve, Aortic Valve, Tricuspid Valve, and Mitral Valve.
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What is the difference between most veins and the pulmonary + umbilical veins?
Most veins take deoxygenated blood from the tissues back to the heart, but the pulmonary and umbilical veins carry oxygenated blood to the heart.
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What effect does smoking have on the heart?
Increases heart rate, tightens major arteries, creates irregular heart beats.
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What is an angioplasty?
A procedure used to restore blood flow through a blocked or narrowed artery using a balloon to inflate the artery.
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