Questions and Answers
What is the primary role of fibroblasts in injury repair?
Nerve cells are capable of dividing and replacing damaged tissue.
False
What type of tissue forms within 3-5 days after an injury as part of the healing process?
granulation tissue
Within 24 hours of an injury, leukocytes will start to come to the area and initiate the __________ process.
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Match the cellular component to its function in the injury repair process:
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Study Notes
Injury Repair by New Connective Tissue Replacement
Immediate Effects of Injury
- Finger is sliced during cooking, causing blood to come out
- Tissues cut through: fingernail, epithelial (skin), muscle tissue, and nerve endings
Nerve and Skin Cell Behavior
- Nerve cells do not divide
- Skin cells divide frequently
Inflammation Process (Within 24 hours)
- Leukocytes arrive at the area
- Fibroblasts come to the area and lay down collagen and components that will form a scar
- Connective tissue starts to repair the injury
Scar Tissue Formation (3-5 Days)
- A new scar tissue forms to fill in the place of nerve and new skin tissue
- Granulation tissue (pinkish tissue) is formed, typically visible around the scab
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Description
This quiz covers the process of tissue repair and healing after an injury, including the steps involved in replacing damaged tissues with new connective tissue. It focuses on the role of fibroblasts, collagen, and leukocytes in the inflammation and scarring process.
