diti Ross and wilson Anatomy and Physiology in health and llness Anne Waugh BSc(Hons)MSc CertEd SRN RNT ILTM Senior Lecturer, School of Acute and Continuing Care Nursing. Napier University, Edinburgh, UK Allison grant BSc PhD RGN Lecturer, School of Biological and Biomedical Sciences, Glasgow Caledonian University, Glasgow, UK Illustrations by Graeme Chambers LIVINGSTONE EDINBURGH LONDON NEW YORK OXFORD PHILADELPHIA ST LOUIS SYDNEY AND TORONTO 2001Ninth Edition Ross and Wilson Anatomy and Physiology in Health and Illness Anne Waugh BSc(Hons)MSc CertEd SRN RNT ILTM Senior Lecturer, School of Acute and Continuing Care Nursing, Napier University, Edinburgh, UK Allison Grant Bsc PHD RGN Lecturer, School of Biological and Biomedical Sciences, Glasgow Caledonian University, Glasgow, UK Illustrations by Graeme Chambers CHURCHILL LIVINGSTONE EDINBURGH LONDON NEW YORK OXFORD PHILADELPHIA ST LOUIS SYDNEY AND TORONTO 2001