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ANATOMY
| Question | Answer |
|---|---|
| What are the levels of organization in the body? | Chemical, cellular, tissue, organ, system, organism. |
| Define homeostasis. | The body’s ability to maintain a stable internal environment. |
| What is the basic unit of life? | The cell. |
| What are the four main elements that make up most of the body? | Oxygen, carbon, hydrogen, and nitrogen. |
| What structure controls what enters and leaves the cell? | The cell membrane (plasma membrane). |
| What is the main function of the skin? | Protection, temperature regulation, and sensation. |
| What are osteoblasts? | Bone-forming cells that build new bone tissue. |
| What is an atom? | The smallest unit of matter that retains the properties of an element. |
| What is epithelial tissue? | Tissue that covers body surfaces, lines organs, and forms glands. |
| Name the three main layers of the skin. | Epidermis, dermis, hypodermis (subcutaneous layer). |