Warmed and humidified inspired air continues its journey from the larynx into the lower respiratory tract (see the first part of this four-part series) and passes next through the trachea. Subscribe ...

Tracheal resection is a surgical procedure used to remove a portion of the trachea, or windpipe. The trachea is the tube that transports air from the mouth and nose to the lungs. During the procedure, ...

Part of Biology (Single Science) Cells, organ systems and ecosystems The air that enters the nasal cavity flows down the trachea. The trachea has a number of adaptations: cartilage rings in the walls ...

Cockroaches tend to unsettle people for obvious reasons, though their biology is often stranger than their appearance. One detail that repeatedly surprises people is the colour of their blood. Unlike ...