The Heart
How many valves are in a human heart
Four
What are veins?
Veins are blood vessels that carry oxygen-poor blood to your heart
What is blood?
Blood is a fluid connective tissue that circulates throughout the body in blood vessels by the pumping action of the heart.
What is the difference between a vein and an artery?
Veins are closer to the surface of your body, and arteries are deep inside your muscles.
What are capillaries?
They transport blood, nutrients and oxygen to cells in your organs and body systems.
What is a heart valve?
Heart valves open and close to let blood flow from one area of your heart to another.
Veins are part of what system?
The circulatory system
The fluid part of blood is called what?
Plasma
What is the function of arteries?
Arteries are blood vessels that distribute oxygen-rich blood to your entire body.
What do capillaries do?
They complete the circulatory system by connecting your arteries to your veins.
What are the two upper chambers in your heart?
Left and right atriums
What are considered blood vessels?
The veins, arteries, capillaries.
What cell has the main function of carrying oxygen in the blood?
Red blood cells
What condition can slow down blood flow through your arteries?
Atherosclerosis
Where are capillaries located?
All over your body, wherever arteries and veins connect.
What are two lower chambers in your heart?
Left and right ventricles
What carries blood back towards your heart?
Veins
Platelets are cell fragments involved in what?
Blood clotting
What two types of arteries are there?
Elastic & Muscular
What two cells do capillaries contain?
Endothelial cells & Epithelial cells
What procedure shows how the valves in the heart are working?
Echocardiography
What side of the heart do your veins bring blood to?
The right side
White blood cells called phagocytes do what?
Destroy pathogens, dead cells, and other debris in the blood.
What is the biggest artery in the body?
Aorta
What are the smallest blood vessels in the body?
Capillaries