The heart is composed of how many loops?
(1 point)
1
2
3
4
2
The blood vessels that carry blood away from the heart to the rest of the body are...
(1 point)
• capillaries
• veins
arteries
valves
arteries
If you catch a cold, which component of blood do you rely on to help attack the virus that has invaded your blood stream?
(1 point)
• plasma
• red blood cells
white blood cells
platelets
white blood cells
Which component of blood is used to help create a scab after you cut your finger?
(1 point)
• plasma
• red blood cells
• white blood cells
• platelets
platelets
Two key components to keeping your heart healthy that are within your control are exercise and...
(1 point)
• diet
• rest
• heredity
• environment