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Weeks 1–5 Review
| Question | Answer |
|---|---|
| Which organ systems work together to maintain homeostasis? | The nervous and endocrine systems coordinate responses to keep the body balanced. |
| What is the skeletal system’s primary function? | To provide support, protection, and movement while storing minerals and producing blood cells. |
| What is negative feedback in homeostasis? | A mechanism that reverses a change to maintain balance (e.g., body temperature regulation). |
| What is the main function of the cell membrane? | It controls what enters and leaves the cell, helping maintain homeostasis. |
| What does the cytoskeleton do? | It helps the cell keep its shape, supports movement, and organizes organelles. |
| What is the function of the mitochondria? | It produces energy (ATP) — often called the “powerhouse” of the cell. |
| What are the main layers of the skin? | Epidermis, dermis, and hypodermis (subcutaneous layer). |
| What are the three types of muscle tissue? | Skeletal, cardiac, and smooth muscle. |
| What is the difference between endocrine and exocrine glands? | Endocrine glands release hormones directly into the bloodstream, while exocrine glands release secretions through ducts (like sweat or oil glands). |
| Give an example of an endocrine gland and an exocrine gland. | Endocrine: thyroid gland; Exocrine: sweat gland. |
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