Apnoea – Temporary stopping of respiration.
Book gills – Respiratory organs in aquatic Limulus.
Book lungs – Respiratory organs of Scorpions and most spiders.
COLD – Chronic Obstructive Lung Disease.
Dyspnoea – painful respiration.
Epiglottis – a thin elastic cartilaginous flap which covers the glottis and prevents the entry of food into the larynx.
Haemoglobin – iron containing red pigment of RBCs of vertebrates, gives red colour to blood.
Herring-Breuer reflex – a defensive mechanism against over dilation of lungs.
Hypoxia – the failure of tissues for any reason to receive an adequate supply of oxygen.
Pneumothorax – presence of air in the pleural cavity which causes collapsing of lungs.
Vocal cords – sound regulating cords also called larynx or voice box.
Yawning – prolonged inspiration due to increase in CO2 concentration.