Pylorus Definition It is a small constriction at the lower end of the stomach that directly opens into the duodenum. The aperture generally marks the end of the stomach and the beginning of the small intestine. It is often mistaken as keratosis pilaris, a common, autosomal dominant condition marked by rough, red, bumps on the skin. Pylorus Location [...]

Porta hepatis Definition It refers to a short, deep fissure that stretches in a traverse manner across the bottom section of the left part of the right liver lobe. It is also referred to as the “Transverse fissure of the liver.”

Intersphincteric groove Definition It refers to a groove or furrow in the anal canal. It forms the lower margin of the pecten analis that separates the margin of the internal anal sphincter from the subcutaneous section of the external anal sphincter. The structure is also known as “Hilton’s White Line.”It has been named after the [...]

Duodenal cap Definition It is the first section of the duodenum, or the part of the small intestine within the jejunum and the stomach. It can be seen by fluoroscopy or with the aid of a roentgenogram. This intestinal structure is also referred to as “Pyloric cap.” Duodenal cap Appearance This structure is about 2 cms [...]

Angle of His Definition It is the acute angle that is formed between the entryway to the stomach and the esophagus, or the passage between the pharynx and the stomach. It is also known as the “His angle”. Angle of His Anatomy The angle is formed by the fibers of collar sling and the circular [...]

Duodenal bulb Definition It is the part of the duodenum that is closest to the stomach. Duodenal bulb Appearance This duodenal structure is about 5 cms long. It is round in shape and has a smoother surface than the other parts of the duodenum that comprise of villi (tiny hair-like mucosal projections), as well as [...]

Dorsal mesentery Definition It is the part of mesentery that is joined to the greater curvature of the stomach. The section of this mesentery that is present at the stomach is also known as “Dorsal Mesogastrium” while the segment that suspends the colon is referred to as “Mesocolon.”

What is Descending colon? It is a section of the large intestine. It is a part of the colon that passes down through the left hypochondrium. It also passes through the lumbar areas and along the side of the left kidney ultimately connecting with the sigmoid colon.

Intestinal Villus Definition Intestinal villus refers to any one of the small, finger-shaped outgrowths of the epithelial lining of the wall of the intestine. A cluster of these projections are referred to as Intestinal villi.

What is Alvus? Anatomists often use the term “Alvus” to refer to the intestinal tube that extends from the stomach to the anus. In a medical connotation, the term draws a reference to the condition of the excrements or feces within the cavity. Due to this reason, a person in the laxative state (diarrhea) is [...]