the vascular system

Question 1

what is the vascular system made up of?

Answer 1

blood vessels that carry blood through the body

Question 2

what do these blood vessels do?

Answer 2

deliver oxygen and nutrients to the body tissues
take away waste products (e.g. CO2)

Question 3

what do the blood vessels ensure?

Answer 3

muscles have an adequate supply of oxygen during exercise in order to cope with increased energy demand

Question 4

what are the two types of circulation?

Answer 4

1) pulmonary
2) systemic

Question 5

what is pulmonary circulation?

Answer 5

deoxygenated blood from the heart to the lungs and oxygenated blood back to the heart

Question 6

what is systemic circulation?

Answer 6

oxygenated blood to the body from the heart and the return of deoxygenated blood from the body to the heart

Question 7

what is the order of travel blood vessels make around the body?

Answer 7

heart - arteries - arterioles - capillaries - venules - veins - heart

Question 8

characteristics of a vein:

Answer 8

1) thin muscle/elastic tissue layers
2) blood at low pressure
3) valves
4) wider lumen

Question 9

characteristics of an artery:

Answer 9

1) high blood pressure
2) more elastic outer layer to cope with fluctuations in pressure
3) smaller lumen
4) smooth inner layer

Question 10

characteristics of capillaries:

Answer 10

1) only wide enough to let one cell pass through at a given time
slows down blood flow
allows exchange of nutrients with the tissues to take place by diffusion