Transverse nasal crease Transverse nasal crease The transverse nasal crease or groove is a usually white line between the upper two-thirds and the lower third of the human nose (slightly above the cartilage tip between the bridge and nostrils). It can occur as the result of heredity, accident, or the constant rubbing or wiping of the nose, commonly referred to as the allergic salute. In addition to cases caused by heredity, physical injury, the transverse nasal crease is common in children and adults with chronic nasal allergies. People with allergies often use their hands to remove mucus from a runny nose or rub
Nasal concha in the ankylosaurid dinosaur "Saichania". Nasal concha In anatomy, a nasal concha (), plural conchae (), also called a turbinate or turbinal, is a long, narrow, curled shelf of bone that protrudes into the breathing passage of the nose in humans and various animals. The conchae are shaped like an elongated seashell, which gave them their name (Latin "concha" from Greek "κόγχη"). A concha is any of the scrolled spongy bones of the nasal passages in vertebrates. In humans, the conchae divide the nasal airway into 4 groove-like air passages, and are responsible for forcing inhaled air to flow in