36. Pulmonary defence mechanisms and common disorders of the respiratory system
36. Pulmonary defence mechanisms and common disorders of the respiratory system
- Gillian Pocock, Gillian PocockSenior Lecturer in Clinical Science, Canterbury Christ Church University, Canterbury, UK
- Christopher D. RichardsChristopher D. RichardsEmeritus Professor of Experimental Physiology, Division of Physiology, Pharmacology and Neuroscience, Faculty of Life Sciences, University College London, London, UK
- and David A. RichardsDavid A. RichardsAssociate Professor, Department of Basic Pharmaceutical Sciences, Husson University School of Pharmacy, Bangor, Maine, USA
Abstract
This chapter explains that the respiratory minute volume of 6 l min-1 results in the intake of over 8500 litres of air each day. Even if the concentration of particles were to be only 0.001 per cent, this would include 85 ml of particulate matter. The chapter points out how the respiratory system needs to remove the inert material and inactivate the infectious and allergenic agents. The chapter mentions the three curved bony plates within the nasal cavity, which is the nasal conchae or turbinates which are covered with respiratory epithelium. These disturb the smooth flow of air and make it turbulent by forcing it into narrow passages where it is warmed and moistened.
