<unk>  (BrE:<unk>  is the cessation of breathing. During<unk> , there is no movement of the muscles of inhalation, and the volume of the lungs initially remains unchanged. Depending on how blocked the airways are (patency), there may or may not be a flow of gas between the lungs and the environment; gas exchange within the lungs and cellular respiration is not affected. Voluntarily doing this is called holding one's breath.<unk>  may first be diagnosed in childhood, and it is recommended to consult an ENT specialist, allergist or sleep physician to discuss symptoms; malformation and/or malfunctioning of upper airways may be observed by an orthodontist.
Apnea
Cornea
Bradypnea
Hypopnea
Hyperpnea
Bronchospasm
Tachypnea
Cyclospasm