The heart is composed of how many loops?

Question

(1 point)
O 1
O 2
O 3
O 4

Answer 1

2

Answer 2

The blood vessels that carry blood away from the heart to the rest of the body are...
(1 point)
• capillaries
• veins
• arteries
• valves

Answer 3

arteries

Answer 4

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

Answer 5

white blood cells

Answer 6

Two key components to keeping your heart healthy that are within your control are exercise and....
(1 point)
• diet
• rest
• heredity
• environment

Answer 7

diet

Answer 8

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

Answer 9

platelets