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| Question | Answer |
|---|---|
| What are the four major tissue types in the human body? | Epithelial, connective, muscle, and nervous tissue. |
| What is the basic unit of life? | The cell. |
| What is the function of the mitochondria? | Produces energy (ATP) for the cell. |
| What term describes the body's ability to maintain a stable internal environment? | Homeostasis. |
| Which directional term means “toward the front of the body”? | Anterior (or ventral). |
| Which body plane divides the body into right and left parts? | Sagittal plane. |
| What is the largest organ in the human body? | The skin. |
| What organ system includes the heart and blood vessels? | The circulatory (or cardiovascular) system. |
| Fill in the blank: The ___ system is responsible for sending electrical signals throughout the body. | Nervous. |
| What type of muscle is found in the walls of internal organs and is involuntary? | Smooth muscle. |