From not very far away at all, blood looks like this:
The Greeks used to think blood was produced exclusively by the liver, and the word “blood” is used in many modern day phrases. Interns are currently looking up examples of those phrases.
Blood delivers necessary substances to the body’s cells. These substances include but are not limited to nutrients and oxygen.
From a reasonable distance, blood looks like this:
Blood transports waste from the very same cells to which it delivers oxygen, nutrients, and other substances.
