This updated Fourth Edition best-selling text and atlas is refined in several ways. Many chapters are completely revised, and nearly half the photographs are new. There are approximately 189 atlas plates, and over 70 new illustrations. Textboxes read as Clinical Correlation or Functional Correlation, and in the text, emphasis is placed on functional integration with increased coverage of cell and molecular biology. The sentence headings and four-color art have been retained from the previous edition. The Fourth Edition now also comes packaged with an interactive image bank which includes all of the high-quality images found in the text.