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An appendage (or outgrowth) is an external body part, or natural prolongation, that protrudes from an organism 's body such as an arm or a leg. Protrusions from single-celled bacteria and archaea are known as cell-surface appendages or surface appendages. In many kinds of eukaryotic cell the protrusions are known as membrane protrusions or cell ...
Mar 1, 2024 · An appendage is a limb or extension attached to the main body of an organism. It can refer to structures such as arms, legs, wings, or antennae. Appendages play various roles in the function and movement of living creatures. They can be used for grasping, locomotion, communication, or sensory perception. The diversity of appendages in the ...
Appendage. An appendage (or outgrowth) is an external body part, or natural prolongation, that protrudes from an organism 's body such as an arm or a leg. Protrusions from single-celled bacteria and archaea are known as cell-surface appendages or surface appendages. In many kinds of eukaryotic cell the protrusions are known as membrane ...
As an example, skin wound injuries have been shown to be covered with excessive proliferation of a select number of stem cell clones, rather than using mass migratory behaviors or cell-fate switches (Aragona et al., 2017). From this perspective, during amphibian limb regeneration, epithelial behaviors seem rather distinct compared to a mouse WE formation for simple injury.
Epithelial appendages are derivatives of the epithelial sheet. They add structural and functional complexities to the otherwise flat epithelia (Fig. 1). Epithelial appendages can be categorized as evaginated or invaginated appendages. Evaginated epithelial appendages like feathers and intestinal villi are appendages that protrude out of the epithelial surface. Invaginated epithelial appendages ...
- Cheng-Ming Chuong
- 2013
- 2013
Here, cilia move rhythmically, moving waste materials such as dust, mucus, and bacteria upward away from the lungs. Flagella (singular = flagellum) are appendages that specialize in cell locomotion. The only flagellated cells in humans are sperm cells. (a) (b) Figure 3.23 Cilia and flagella (a) cilia, (b) flagellum on human
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The organelles and cytosol, taken together, compose the cell’s cytoplasm. The nucleus is a cell’s central organelle, which contains the cell’s DNA (Figure 1). Figure 1. Prototypical Human Cell. While this image is not indicative of any one particular human cell, it is a prototypical example of a cell containing the primary organelles and ...
