The nervous system consists of the ________.
A
heart, brain and lungs
B
spinal cord, nerves and brain
C
arteries, veins and blood
D
backbone and skull
B
spinal cord, nerves, and brain
A
heart, brain and lungs
B
spinal cord, nerves and brain
C
arteries, veins and blood
D
backbone and skull
spinal cord, nerves, and brain