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Questions and Answers
What type of cells proliferate continuously throughout life to replace aging cells?
What type of cells proliferate continuously throughout life to replace aging cells?
Which of the following is categorized as a stable cell?
Which of the following is categorized as a stable cell?
What is the primary function of permanent cells in the body?
What is the primary function of permanent cells in the body?
What happens to stable cells when there is large damage?
What happens to stable cells when there is large damage?
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Which cells are included in the labile cell category?
Which cells are included in the labile cell category?
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Study Notes
Cells and Regeneration
- The body's cells are divided into three groups based on their regenerative capacity.
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Labile cells continuously proliferate throughout life, replacing aging cells. This group includes:
- Surface epithelium like stratified squamous epithelium of the skin, columnar epithelium of the alimentary tract, and transitional epithelium of the urinary tract.
- Haemopoietic and lymphoid tissues.
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Stable cells do not proliferate under normal conditions but can proliferate when needed. This group includes:
- Parenchymatous stable cells like those in the liver and pancreas.
- Mesenchymal stable cells like fibroblasts and chondroblasts.
- Stable cells can regenerate with small damage, but extensive damage leads to repair with fibrosis.
- Permanent cells cannot proliferate at all, such as muscle cells and nerve cells.
Stable Cells: Parenchymatous vs. Mesenchymal
- Stable cells are further divided into parenchymatous and mesenchymal cells.
- Parenchymatous stable cells are found in organs like the liver and kidney.
- Mesenchymal stable cells include fibroblasts and chondroblasts.
Healing by Fibrosis
- Healing by fibrosis is a process of tissue repair involving the formation of fibrous connective tissue (scar).
Wound Healing
- Wound healing is a complex process involving multiple stages.
Complications
- Complications can arise during wound healing.
Factors Controlling Repair
- Several factors contribute to the success of tissue repair.
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Description
This quiz explores the different types of cells in the human body based on their regenerative capabilities. It covers labile, stable, and permanent cells, focusing on their roles and characteristics. Additionally, the distinction between parenchymatous and mesenchymal stable cells is highlighted.
