Cardiovascular System Flashcards
(10 cards)
Name 2 functions of the cardiovascular system
Brings nutrients and oxygen to cells
Removes waste products to be excreted
What are capillaries?
Microscopic vessels that join arteries & veins
What are arteries?
Blood vessel that carries blood away from the heart
Describe capillaries’ walls
Thin walls made of 1 layer of cells named the endothelium
Describe arteries’ walls
Elastic walls (to help regulate blood flow) made of a thick smooth muscle layer
Which blood vessel transports blood to the head?
Carotid artery
Name 4 differences between arteries & veins
Arteries:
1. Carries blood away from the heart
2. Carries oxygenated blood
3. Thick smooth muscle layer
4. High pressure
Veins:
1. Carries blood to the heart
2. Carries deoxygenated blood
3. Thin smooth muscle layer
4. Low pressure
Which characteristic of arteries help regulate blood flow?
Elastic walls
What is blood?
Living tissue that circulates through the body
Name 3 substances that blood transports
Oxygen, salts, nutrients & waste
