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|
|
3
|
place where substances are exchanged between the blood and body cells
|
|
4
|
the liquid part of blood
|
|
5
|
take up oxygen in the blood and deliver it to cells elsewhere in the body
|
|
6
|
the body's disease fighters
|
|
7
|
(singular) lower chambers of the heart
|
|
8
|
the process by which molecules move from an area of higher concentration to an area of lower concentration
|
|
13
|
a force exerted by blood against the walls of blood vessels
|
|
14
|
group of heart cells that sends out signals that make the heart muscle contract
|
|
15
|
blood vessels that carry blood away from the heart
|
|
16
|
iron-containing protein that binds chemically to oxygen molecules
|
|
|
|
|
|
|
1
|
a flap of tissue that prevents blood from flowing backward
|
|
2
|
blood vessels that carry blood back to the heart
|
|
3
|
consists of the heart, blood vessels, and blood
|
|
9
|
(singular) upper chambers of the heart
|
|
10
|
largest artery in the body
|
|
11
|
the alternating expansion and relaxation of the artery walls
|
|
12
|
hollow, muscular organ that pumps blood throughout the body
|
|
|
|
