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Bone & Tissue Injury
| Question | Answer |
|---|---|
| Acute/Inflammatory Phase | 1st phase of bone healing; bleeding occurs at the injury site |
| Repair & Regeneration Phase | 2nd phase of bone healing; osteocytes work to support the bone. A callus forms along the fracture site closing the bone structure. Usually takes 4-6 weeks. |
| Remodeling Phase | 3rd phase of bone healing; can take up to a year or more. Osteocytes work to replace the immature, calcified area with a more bone-like structure. |
| Incision | Precise even cut |
| Laceration | Cut involving more tearing of the skin, irregular in shape |
| Avulsion | Tissue is torn away |
| Puncture | A hole is pierced in the skin; very little bleeding |
| Neuron | Nerve cell |
| Afferent Neuron | Sensory nerve |
| Efferent Neuron | Motor nerve |
| Nerve Healing | VERY SLOW PROCESS; if nerve is completely severed no healing will occur - new pathways must be created. |
| Myelin Sheath | Protective covering on the axon which has an electrical charge |
| Axon | Nerve signal pathway; connects nerve cell to dendrites |
| Hyperesthesia | Heightened sensation |
| Hypoesthesia | Lowered sensation |
| Paraesthesia | Temporary, partial or transient loss of sensation |