apical surface. Definition. surface of epithelial cell that is exposed to the body exterior or to the cavity of an internal organ. -"free surface"
What is the apical membrane?
apical membrane. (redirected from Apical surface) the microvilli-bearing portion of the epithelial cell membrane at the secretory pole. the layer of plasma membrane on the apical side (the side toward the lumen) of the epithelial cells in a body tube or cavity, separated from the basolateral membrane by the zonula occludens.
What is the apical surface of cystic epithelium?
The apical surface of the cystic epithelium is often papillomatous as well. Tibia with dorsal apical surface slightly concave, with angular borders; all margins with small spines, except anterodorsal margin; cuticular fold covering half of tympanic opening on both sides.
What is the shape of the apical surface of a pseudopod?
Pseudopods and protrusions with dome-shape or balloon-like shape were commonly observed on the apical surface. It contained fine granular matrix often with colloid droplet this feature signify apocrine secretions as has been observed in camel (Atoji et al.
What is the apical domain of epithelial cells?
The apical surface of the epithelial cell is the upper free surface exposed to the body exterior or the cavity of an internal organ, the structural modifications in the apical domain include:
What is an apical surface?
The surface of an epithelial cell that faces the lumen.
Where is the apical surface of the skin?
The apical surface faces the lumen (inside of a hollow organ) while the basal or basolateral surface is adjacent to the underlying tissue.
What does free surface mean in tissues?
Updated On: 17-04-2022. Video Solution: This tissue has a free surface, which faces either a body fluid or the outside environment and thus provides a covering ro a lining for some part of the body. The cells are compactly packed with little intercellular matrix.
Why is the apical surface of epithelium sometimes called the free surface?
Most epithelial tissues have cells with one free, or (apical), surface not attached to other cells; a lateral surface attached to other epithelial cells; and a basal surface attached to a basement membrane. The free surface often lines the lumen of ducts, vessels, and cavities.
What is the difference between apical and basal surface?
The bottom edge of the epithelial tissue next to the basement membrane is the basal surface. In contrast, the edge of the epithelial tissue facing the lumen or the external environment is called the apical surface.
Which term is used to describe the free surface of an epithelium?
Epithelial cells have a free surface called the apical surface.
Why is free surface effect important?
Free Surface Effect Of Ships: When any tank or a compartment is partially filled, the motion of the liquid (due to the ship's rolling and pitching motions) would reduce the stability of the ship.
Which kind of tissue has free surface?
Epithelial Tissue(1) Epithelial Tissue Tissue has a free surface, which faces either a body fluid or the outside environment and thus provides a covering or a lining for some part of the body.
How does the free surface effect occur?
When a compartment is not completely filled with liquid it is said to have a free surface that tends to remain horizontal . As the ship inclines,the liquid flows to the lower side (in the direction of inclination)thereby increasing the inclining moment.
What is free surface in cells?
In physics, a free surface is the surface of a fluid that is subject to zero parallel shear stress, such as the interface between two homogeneous fluids. An example of two such homogeneous fluids would be a body of water (liquid) and the air in the Earth's atmosphere (gas mixture).
What is the function of an epithelial free surface that is smooth of one that has microvilli of one that has cilia?
structure and function. …the cell membrane to form microvilli, stable protrusions that resemble tiny bristles. Microvilli on the surface of epithelial cells such as those lining the intestine increase the cell's surface area and thus facilitate the absorption of ingested food and water molecules.