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Shaeed Physiology
Physiology Flashcard
| Question | Answer |
|---|---|
| What is homeostasis? | The process by which the body maintains a stable internal environment despite external changes. |
| What are the main components of a homeostatic control system? | Receptor (detects change), Control Center (processes information), and Effector (carries out response). |
| What are the four main types of biomolecules? | Carbohydrates, lipids, proteins, and nucleic acids. |
| What is the Fluid Mosaic Model of the cell membrane? | It describes the cell membrane as a flexible layer made of lipid molecules with proteins that move freely within it. |
| What are the main phases of the cell cycle? | Interphase (G₁, S, G₂) and the Mitotic phase (mitosis + cytokinesis). |
| What are the main functions of the skeletal system? | Support, protection, movement, mineral storage, and blood cell formation. |
| How do muscles contract at the molecular level? | Myosin heads bind to actin filaments and pull them inward using ATP, shortening the muscle fiber. |
| What is the difference between compact and spongy bone? | Compact bone is dense and strong; spongy bone is porous and contains bone marrow. |
| What are the main functions of the skin? | Protection, temperature regulation, sensation, and vitamin D production. |
| What are the four main types of human tissues? | Epithelial, connective, muscle, and nervous tissue. |
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