What is blood made of and what does it do inside our bodies?
What is blood pressure and what does it do?
How do you calculate your maximum heart rate?
What is a blood vessel and what does it do?
How do we keep our hearts healthy?
What can be done to prevent heart attacks?
What is a stroke? Why do people get them?
What is the medical condition known as “AVM?”
Why are the walls of blood capillaries so thin?
Are there different pulses in your body ?
Do humans have xylem and phloem?
Do the heart and lungs ever stop?
What is a stent?
What is mesenteric ischemia?
What exactly is your target heart rate?
If blood is red why do veins look blue?
What is Raynaud's disease?
How is the lymphatic system different than the circulatory system?
Why do we get pins and needles?
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