title: The respiratory system. Part 4: breathing.
authors.affiliation: Department of Nursing and Midwifery, University of Hertfordshire.
authors.forename: Marion
authors.initials: M
authors.lastname: Richardson
mesh_terms: D002628:Chemoreceptor Cells / Q000502:physiology; D045853:Exhalation / Q000502:physiology*; D006801:Humans; D001239:Inhalation / Q000502:physiology*; D007367:Intercostal Nerves / Q000502:physiology; D008465:Mechanoreceptors / Q000502:physiology; D008526:Medulla Oblongata / Q000502:physiology; D010791:Phrenic Nerve / Q000502:physiology; D012132:Respiratory Muscles / Q000033:anatomy & histology / Q000502:physiology