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physiology week 14
| Term | Definition |
|---|---|
| Osteoblasts | Bone-forming cells that build new bone tissue |
| Osteoclasts | Bone-resorbing cells that break down bone matrix |
| Sliding Filament Theory | How muscles contract when actin and myosin slide past each other. |
| Neuromuscular Junction | Point where a motor neuron stimulates a muscle fiber using acetylcholine. |
| Action Potential | A rapid electrical signal that travels along a neuron |
| Synapse | The junction where neurons communicate using neurotransmitters. |
| Mechanoreceptors | Sensory receptors for touch, pressure, and vibration. |
| Photoreceptors | Rods and cones in the retina that detect light. |
| Negative Feedback | Hormonal regulation that maintains homeostasis by reversing changes. |
| Hormone Receptors | Proteins on cells that allow specific hormones to bind and have an effect. |