Question

How does the immune system work together with the circulatory system to function properly?

A.
The infection site receives oxygen-depleted blood from the circulatory system's arteries, so the immune system works harder.

B.
The white blood cells of the immune system fight and destroy pathogens.

C.
Pathogens released by immune cells cause increased blood flow to the infection site, which brings other pathogens to the area more quickly.

D.
Red blood cells move through the body (to parts where they are needed) in the blood vessels of the circulatory system to fight infectio

Answer 1

wat school u go to?

Answer 2

I'm homeschooled

Answer 3

mehh too

Answer 4

But I had trouble with this unit

Answer 5

i think the answer is D

Answer 6

and in order to do friday family fun night I have to pass the test.

Answer 7

Thank you

Answer 8

wat grade u in nd fan mehh

Answer 9

YES I PASSED

Answer 10

I'm in 7th

Answer 11

kcool nd thanx for the medal

Answer 12

Thank you for the help! :)

Answer 13

welcome anytime lol :)

Answer 14

:)

Answer 15

Thank you the answer was D thanks Phede and im in the same grade and im homeschool also coool guys you rock :)

Answer 16

im going to fan both of you and give you a medal ;) -Wink-

Answer 17

B