What is the human body made of?
Q: What is the human body made of? A: The human body is built from trillions of cells. Similar cells group into tissues (muscle, nerve, epithelial, connective). Tissues form organs (heart, lungs, brain), and organs work together as systems (circulatory, respiratory, nervous, etc.). Chemically, the body is ~60% water, along with proteins, fats (lipids), carbohydrates, … Read more