★ Circulatory System Quiz
What function does the heart do?
A. Protects organs and produces red blood cells.
B. Generates heat.
C. Breaks down food into nutrients.
D. The heart is a pump, which moves the blood. The arteries and veins are the pipes where the blood flows.
Select your answer:
Topics:
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Pathogens, Disease and Immunity › ViewThe second line of defense in the body is the
A. barriers.
B. inflammatory response.
C. immune system.
D. lymphatic system.
Urinary System › View
collects drops of urine
A. Renal Papilla
B. Calyx
C. Renal Pelvis
D. Nephron