Haemorrhage from respiratory passages (Q59405)

Haemorrhage from respiratory passages is the bleeding from upper respiratory tract or lower respiratory tract. The major passages and structures of the upper respiratory tract include the nose or nostrils, nasal cavity, mouth, pharynx, and larynx. The major passages and structures of the lower respiratory tract include the trachea and within the lungs, the bronchi, bronchioles, and alveoli.