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Human Physiology
🧠Human Physiology Flashcards (Weeks 7–13)
| Question | Answer |
|---|---|
| What creates a membrane potential in a cell? | The unequal distribution of ions across the cell membrane. |
| How is resting membrane potential maintained in neurons? | By the sodium-potassium pump, keeping the inside more negative. |
| What makes local potentials different from action potentials? | They are small, short-lived, and may not lead to a full nerve impulse. |
| What happens when nerve signaling is disrupted? | Disorders like multiple sclerosis or epilepsy can develop. |
| Which key steps are involved in brain development? | Neurons form, migrate, make connections, and get insulated. |
| Why is cerebrospinal fluid important? | It protects the brain, circulates nutrients, and removes waste. |
| What does insulin do in the body? | It lowers blood sugar by helping cells absorb glucose. |
| What is happening during the cardiac cycle? | The heart contracts and relaxes to pump blood through the body. |
| What are the components of blood? | Plasma, red blood cells, white blood cells, and platelets. |
| How do antibodies protect the body? | They recognize and attach to foreign substances like bacteria. |
| What is the main goal of pulmonary ventilation? | To move air in and out of the lungs for gas exchange. |
| What is an example of mechanical digestion? | Chewing food or the stomach c |
Created by:
Edna Chukwuani
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