Parenchymal organ and hollow organ
- Parenchymal organ
- (fuchsin and picric acid)
An example of a parenchymal organ is the liver.
The liver parenchyma is formed by epithelial tissue consisting of hepatocyte cells involved in the production of bile, biosynthesis and deposition of various substances, detoxification of products harmful to the body. Hepatocytes form cords between which pass blood capillaries #1, #2.
The stroma of the liver is formed by a capsule and extending from it layers of connective tissue #1, #2, dividing the parenchyma of the organ into lobules.
Blood vessels and bile ducts are located in the interlobular connective tissue.
The structure of this organ is described in detail in the section "Pancreas. Liver and gallbladder".
Parenchymal organ and hollow organ
- Hollow organ
- (hematoxylin and eosin)
An example of a hollow tubular organ is the esophagus.
The cross section of the organ shows its cavityand and wall. The wall of the esophagus is formed by mucosa, submucosa, muscularis and adventitia.
The inner surface of the esophagus is uneven due to the presence of folds #1, #2, formed by mucosa and submucosa.
The structure of this organ is described in detail in the chapter "Oral cavity. Pharynx and esophagus.".