Circulatory System Flashcards
1
Q
What is the top number on a blood pressure reading?
A
systolic blood pressure (measures pressure in your vessels when your heart beats)
2
Q
What is the bottom number of a blood pressure reading?
A
diastolic blood pressure (measures the pressure when your heart rests between beats)
3
Q
What are arteries?
A
- bring blood away from heart
- under high pressure
- blood travels in spurts
- blood is oxygenated
- thick muscular walls
- no valves
4
Q
What are veins?
A
- take blood to the heart
- travels smoothly
- less pressure than arteries
- carry deoxygenated blood
- dark maroon colour
- larger lumen but thinner walls
- contain valves
5
Q
What are capillaries?
A
- RBC travel in single file
- all exchange nutrients/waste occurs here
- single cell walls (squamous epithelium)