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The human appendix averages 9 cm (3.5 in) in length, ranging from 5 to 35 cm (2.0 to 13.8 in). The diameter of the appendix is 6 mm (0.24 in), and more than 6 mm (0.24 in) is considered a thickened or inflamed appendix.
Scar and bruise 2 days after operation Scar 10 days after operation. A study from 2010 found that the average hospital stay for people with appendicitis in the United States was 1.8 days. For people with a perforated (ruptured) appendix, the average length of stay was 5.2 days. [18] Recovery time from the operation varies from person to person.
Ileum, caecum and colon of rabbit, showing Appendix vermiformis on fully functional caecum The human vermiform appendix on the vestigial caecum. The appendix was once believed to be a vestige of a redundant organ that in ancestral species had digestive functions, much as it still does in extant species in which intestinal flora hydrolyze cellulose and similar indigestible plant materials. [10]
Amyand's hernia is a rare form of an inguinal hernia (less than 1% of inguinal hernias) [2] which occurs when the appendix is included in the hernial sac and becomes incarcerated. The condition is an eponymous disease named after a French surgeon , Claudius Amyand (1660–1740), [ 3 ] who performed the first successful appendectomy in 1735.
In humans, the vermiform appendix is sometimes called a vestigial structure as it has lost much of its ancestral digestive function.. Vestigiality is the retention, during the process of evolution, of genetically determined structures or attributes that have lost some or all of the ancestral function in a given species. [1]
Location of McBurney's point (1), located two-thirds the distance from the umbilicus (2) to the right anterior superior iliac spine (3) The presentation of acute appendicitis includes acute abdominal pain, nausea, vomiting, and fever. As the appendix becomes more swollen and inflamed, it begins to irritate the adjoining abdominal wall.
While the Vermes is no longer a taxonomic group, anatomists continue to use the description "vermiform" of animals or organs that are worm-shaped. The word root is Latin, vermes (worms) and formes (shaped). [3] A well known example is the vermiform appendix, a small, blind section of the gut in humans and a number of other mammals. [4]
In human anatomy, the vermiform appendix is sometimes classed as a vestigial remnant. Prosthesis is an artificial extension that replaces a body part, [ 9 ] and cybernetics is the study of computer technology in relation to organisms, which can include replacement or additional body parts.