Question 4 is to consume food.
Oxygen-poor blood goes into the lungs and through the lung capillaries after leaving the heart. It does so to be oxygenated by the lungs. The oxygen in the lungs comes from the air we breath. Once the blood is oxygenated, it goes back into the heart, to be pumped back into our bodies for distribution.
Answer:
cytoplasm, nucleus, cell membrane
The speed at which neural impulses are transmitted.
Diameter of the axon
Degree of