4. Which system is responsible for the transport of blood and dissolve substances
to various parts of the body?
A. Muscular system
Nervous system
B. Skeletal system
Circulatory system
5. Why the peripheral nervous system is important?
A. Reacts quickly and protect the body from harm
B. Carries nutrients to all parts of the body
C. Largest part of the brain
D. Protect the spinal cord
6. Which blood vessels carry blood contain carbon dioxide from the cell back to
your heart?
A. septum
B. veins
C. arteries
D. capillaries​