The apical surface of epithelial cells faces the body surface or an open cavity. This is the side that is exposed to the external environment.
The portion of the cell exposed to the lumen. The layer of plasma membrane on the apical side (side towards the lumen) of the epithelial cells in a body tube or cavity, separated from the basolateral membrane by the zonula occludens.- thefreedictionary.com
Absorption of glucose from the gut lumen depends on the presence of specific glucose transporters, particularly SGLT1 and GLUT2, located on the surface of the intestinal epithelial cells. These transporters facilitate the movement of glucose from the intestine into the bloodstream via active transport and facilitated diffusion mechanisms. Glucose absorption is also influenced by factors such as the concentration gradient of glucose across the intestinal epithelium, as well as hormonal regulation.
An orifice is an opening or hole, whereas a lumen refers to the inner space or cavity within a tubular structure such as a blood vessel or intestine. In simpler terms, an orifice is an opening, while a lumen is the space inside that opening.
The pH is lowest on the lumen side of the thylakoid membrane during photosynthesis. This is because protons are pumped into the thylakoid lumen as part of the electron transport chain, creating an acidic environment that helps drive ATP production through chemiosmosis.
The apical surface of epithelial cells faces the body surface or an open cavity. This is the side that is exposed to the external environment.
The portion of the cell exposed to the lumen. The layer of plasma membrane on the apical side (side towards the lumen) of the epithelial cells in a body tube or cavity, separated from the basolateral membrane by the zonula occludens.- thefreedictionary.com
Simple Squamous epithelial cells are found in the lung (alveoli), lining the lumen of blood vessels, and lymphatic vessels, and also in the kidneys.
The epithelial lining of the gastrointestinal tract is called the mucosa. It is composed of specialized cells that help with absorption, secretion, and protection within the digestive system.
The digestive system has a lumen in its internal environment. The lumen is the space within the digestive tract where food is digested and absorbed. It is lined with epithelial cells that facilitate the process of digestion.
Absorption of glucose from the gut lumen depends on the presence of specific glucose transporters, particularly SGLT1 and GLUT2, located on the surface of the intestinal epithelial cells. These transporters facilitate the movement of glucose from the intestine into the bloodstream via active transport and facilitated diffusion mechanisms. Glucose absorption is also influenced by factors such as the concentration gradient of glucose across the intestinal epithelium, as well as hormonal regulation.
Lumen
Epithelial tissue is more apt to line a lumen due to its characteristic of forming continuous cellular sheets that provide a protective barrier. This type of tissue is found in organs that have cavities or spaces, such as the digestive tract, respiratory tract, and blood vessels.
there are 2 faces on a hemisphere the round side and the flat side
The Moon has no faces. It has one side facing Earth called the near side, and one side that is always facing away called the far side.
octagon
Lumen