<Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> <P> In anatomy, a nasal concha (/ ˈkɒnkə /), plural conchae (/ ˈkɒnki /), 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 turbinate bone is any of the scrolled spongy bones of the nasal passages in vertebrates . </P> <P> In humans, the turbinates divide the nasal airway into 4 groove - like air passages, and are responsible for forcing inhaled air to flow in a steady, regular pattern around the largest possible surface area of nasal mucosa, which, as a ciliated mucous membrane with shallow blood supply, cleans and warms the inhaled air in preparation for the lungs . </P> <P> A rapidly dilating arteriolar circulation to these bones may lead to a sharp increase in the pressure within, in response to acute cooling of the body core . The pain from this pressure is often referred to as "brain freeze", and is frequently associated with the rapid consumption of ice cream . The shallowness of the venous blood supply of the mucosa contributes to the ease with which nosebleed can occur . </P>

What is the purpose of the nasal conchae
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