The space between the roof of the mouth and the base The two openings in the nose that allow air to the lungs. of the skull. Divided in two by a septum and each half connects to the exterior via the nostrils. nasal cavity nostrils Blood that has oxygen attached to the haemoglobin. The space between the membranes of the pleura. oxygenated blood pleural cavity Fluid found between the pleura which reduces friction Two thin membranes of epithelium one lines the – when breathing. cavity of the thorax and the other covers the outer surface of the lungs. pleural fluid pleural membranes The number of inspirations per minute. The average for Specialised region where gaseous exchange takes place, an adult at rest is approximately sixteen. Controlled by the ventilation centre of the medulla oblongata. e.g. alveoli of humans, gills of fish, skin of earthworm. rate of breathing respiratory surface
The space between the roof of the mouth and the base of the skull. Divided in two by a septum and each half connects to the exterior via the nostrils. nasal cavity The two openings in the nose that allow air to the lungs. nostrils Blood that has oxygen attached to the haemoglobin. oxygenated blood The space between the membranes of the pleura. pleural cavity Fluid found between the pleura which reduces friction when breathing. pleural fluid Two thin membranes of epithelium – one lines the cavity of the thorax and the other covers the outer surface of the lungs. pleural membranes The number of inspirations per minute. The average for an adult at rest is approximately sixteen. Controlled by the ventilation centre of the medulla oblongata. rate of breathing Specialised region where gaseous exchange takes place, e.g. alveoli of humans, gills of fish, skin of earthworm. respiratory surface