The Darwinian tubercle is a small bump on the ear's helix, which is present in approximately 10% of the population. Its name comes from the theory of evolution proposed by Charles Darwin. The word 'Darwinian' is pronounced /dɑːwɪniən/ in IPA and relates to Darwin's ideas about natural selection. 'Tubercle' is pronounced /tjuːbəkl/ and refers to a small rounded projection on a bone. The spelling of 'Darwinian tubercle' is straightforward since it combines the namesake and the anatomical feature.
Darwinian tubercle, also known as Darwin's tubercle or auricular tubercle, is a small, congenital anatomical feature found on the external ear. Named after the renowned scientist Charles Darwin, this tubercle is described as a subtle, raised bump or nodule located near the upper part of the ear's helix. Usually present in approximately 10-15% of the population, it is more commonly identified on the right ear.
The exact function or purpose of Darwinian tubercle is still not entirely understood by medical experts. It is presumed to be a remnant of a larger structure that served a more critical role in ancient humans, potentially related to ear movement or sound localization. However, in modern humans, it is considered to be a vestigial trait, a remnant from our evolutionary past with no significant or practical function.
From a clinical perspective, Darwinian tubercle is generally considered a normal anatomical variant and is of little medical significance. It is often asymptomatic and does not cause any health concerns or complications. However, in some cases, it may be linked to certain genetic disorders or syndromes, and thus it could be of interest to medical professionals in those specific scenarios.
Overall, Darwinian tubercle is a subtle, benign feature found on the external ear that is present in a minority of individuals. While its significance and exact evolutionary purpose remain uncertain, it serves as a reminder of our biological heritage and the ongoing processes of natural selection and adaptation.
Tuberculum auriculae.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The term "Darwinian tubercle" is derived from the name of the English naturalist Charles Darwin, who is renowned for his contributions to the theory of evolution. The word "tubercle" refers to a small, rounded projection or swelling, typically found on bones or the surface of the body. The association with Darwin likely comes from the observation that such a tubercle or small projection is sometimes present on the outer rim of the human ear, a feature known as the "Darwinian tubercle". Charles Darwin himself discussed this anatomical trait in his book "The Descent of Man", published in 1871, where he mentioned it as an inherited characteristic from our primate ancestors.