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Physiology
Physiology weeks 1-6
| Question | Answer |
|---|---|
| Homeostasis | The body's ability to maintain stable internal conditions despite external changes. like a thermostat |
| Negative feedback loop | A control system that reverses a deviation from normal e.g. sweating to cool body down. |
| Enzyme | A biological catalyst that speeds up chemical reactions without being consumed. |
| ATP (Adenosine Triphosphate) | The cell's main energy currency, stores and delivers power for everything from nerve signals to muscle contractions. |
| Mitosis | The process of cell division that creates two identical daughter cells. for growth and repair |
| Epithelial Tissue | Tissue that covers the body surfaces, lines cavities, and forms glands- your body's inner and outer wallpaper. |
| Keratin | A tough, protective protein found in the skin, hair and nails, the reason your epidermis doesn't dissolve in the shower. |
| Osteon (Haversian System) | The structure unit of compact bone- a ringed system that houses blood vessels and nerves within bone tissue. |
| Synovial Joint | A freely movable joint surrounded by a capsule filled with synovial fluid- the WD-40 for your skeleton |
| Sliding Filament Theory | The explanation of how muscles contract- actin and myosin filaments slide past each other, shortening the muscle fiber. |
| How does the body maintain homeostasis when blood sugar rise after eating? | The pancreas releases insulin, which helps cells absorb glucose, lowering blood sugar back to normal. |
| What makes water such an important molecule in the body chemistry? | Water is polar, acts as a solvent, helps regulate temperature, and enables chemical reactions through hydrolysis and dehydration synthesis. |
| What role does the plasma membrane play in cell function? | It controls the movement of substances in and out of the cell, maintaining internal balance, |
| Why is mitosis important for the human body? | It allows for growth, tissue repair, and replacement of old or damages cells, keeping your body functioning smoothly. |
| How are the joints classified by movement? | Synarthrosis (no movement), amphiarthrosis (slight movement), diarthrosis ( freely movable) |
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Jaylove2710