Wheater's Functional Histology

Citation

O'Dowd, G., Bell, S., & Wright, S. (2023). Wheater's Functional Histology (7th ed.). Elsevier.

Chapter Summary

The seventh edition keeps the layout the book has used for decades. Its preface describes it as primarily an atlas of histology: each section opens with a short passage of introductory text, followed by numerous annotated light micrographs, electron micrographs and line drawings. Each figure unit carries its own explanatory text and a key to the labels, so a page can be studied on its own at the microscope. The 21 chapters fall into three parts (the cell, the basic tissue types and the organ systems), followed by three appendices. The publisher lists clinical correlation boxes, end-of-chapter review tables and self-assessment questions with rationales as standing features. The preface states that the clinical correlation sections were expanded for this edition and linked to the companion text, Wheater's Basic Pathology.

Part I: The Cell

Chapter 1: Cell structure and function

The longest chapter (about thirty pages) lays the cellular foundation for the rest of the book. It opens by defining histology as the study of normal cells and tissues, explains that structure and function determine each other, and notes that knowledge of normal structure is the basis for histopathology. It then works through the eukaryotic cell with paired electron micrographs and diagrams: the plasma membrane and lipid bilayer, membrane proteins and the glycocalyx, the nucleus, endoplasmic reticulum, Golgi apparatus, mitochondria and the cytoskeleton, with a later section on import, export and intracellular transport.

Chapter 2: Cell cycle and replication

A shorter chapter on how cells divide and replicate, completing the cell-level material before tissues are introduced.

Part II: Basic Tissue Types

Chapter 3: Blood, haematopoiesis and bone marrow

The circulating blood cells and their production in the bone marrow, placed first among the tissue chapters.

Chapter 4: Supporting/connective tissues

The tissues that bind and support other tissues, with their cells and extracellular matrix.

Chapter 5: Epithelial tissues

The lining and covering tissues and their classification, a framework that recurs in almost every organ chapter.

Chapter 6: Muscle

The types of muscle tissue and how their microscopic structure relates to contraction.

Chapter 7: Nervous tissues

Nerve cells and their supporting cells at the tissue level; the organisation of the brain and spinal cord is left to Chapter 20.

Part III: Organ Systems

Chapters 8–11: Circulatory system; Skin; Skeletal tissues; Immune system

These chapters apply the basic tissues to the blood vessels and heart, the skin, bone and cartilage, and the immune system. The immune system chapter is among the longer organ chapters, at roughly 26 pages.

Chapters 12–15: Respiratory system; Oral tissues; Gastrointestinal tract; Liver and pancreas

The airways and lungs, then the digestive system from the mouth through the gut to the liver and pancreas. A separate chapter on oral tissues makes the book useful for dental students as well as medical students.

Chapters 16–19: Urinary system; Endocrine system; Male reproductive system; Female reproductive system

The kidney and urinary tract, the endocrine glands and the two reproductive systems. At more than thirty pages, the female reproductive system chapter is the longest of the organ chapters.

Chapters 20–21: Central nervous system; Special sense organs

The book closes with the brain and spinal cord and with the special sense organs.

Part IV: Appendices

Appendix 1, "Introduction to microscopy", and Appendix 2, "Notes on staining techniques", explain tissue preparation, light and electron microscopy and the stains seen throughout the book. Appendix 3 is a glossary of terms. The preface says the appendices were greatly improved and expanded for this edition so that the book stays accessible to absolute beginners, and the opening of Chapter 1 urges students to read the first two appendices before anything else.

Key Concepts

Part I: The Cell

• Structure and function: the book's organising idea; histological structure determines, and is determined by, what a tissue does.
• Histopathology: the microscopic study of changes caused by disease, for which normal histology is the foundation.
• Differentiation: the process by which cells take on a specialised structure and function, while still sharing a common basic cell model.
• Lipid bilayer and membrane proteins: the structure of the cell membrane that separates compartments and controls what passes between them.

Part II: Basic Tissue Types

• Haematopoiesis: the formation of blood cells in the bone marrow.
• Basic tissue types: the book groups tissues as blood, supporting/connective, epithelial, muscle and nervous tissue, and builds every organ from them.

Part III and Appendices

• Clinical correlation: boxes and images that link normal microscopic appearance to dysfunction and common diseases.
• Staining techniques: the methods that make tissue components visible, which determine what a micrograph shows.

Critical Analysis

Strengths

• Micrograph-led learning. The preface describes the book as primarily an atlas, with short introductory text followed by numerous annotated light and electron micrographs and line drawings. The publisher counts more than 900 images and illustrations. Each figure carries its own explanatory paragraph and label key, which suits work alongside a microscope or virtual slides.
• Written for first-time learners. Both the publisher and the preface aim the book at students meeting histology for the first time. The expanded appendices on tissue preparation, microscopy and staining, plus a glossary, support readers with no laboratory background.
• Function and disease kept in view. The preface to the first edition (1979) set out the book's aim of presenting histology in relation to physiology, biochemistry and molecular biology. The seventh edition adds more clinical correlation material, linked to the companion pathology text, to help students remember seemingly abstract features.
• Built-in revision tools. End-of-chapter review tables and self-assessment questions with explanations of the answers support exam preparation.

Limitations

• Short text by design. Because the explanatory text is deliberately brief, students who need the cell and molecular biology behind tissue structure in depth will need a fuller textbook.
• Normal histology, not pathology. The clinical boxes are correlations, not a pathology course; the preface points readers to Wheater's Basic Pathology for disease.
• Little on development. The table of contents has no embryology chapter, so the embryology half of a histology-and-embryology course needs a separate book.

Where It Fits in the Course

In this course Wheater's is the most atlas-centred of the histology books, and a natural first book. Junqueira's Basic Histology is also a concise text and atlas, but it gives more weight to explanatory text, medical applications and review questions. Ross and Pawlina's Histology: A Text and Atlas is a larger text that adds cell and molecular biology and clinical correlations. A common pattern is to use one of these as the main text and keep Wheater's open for the images, or to begin with Wheater's and move to the larger book for depth. Mills's Histology for Pathologists is a specialist reference on normal histology written from the pathologist's point of view, useful only much later, for example in pathology training.

For the embryology half of the course, Before We Are Born offers a concise introduction to development and birth defects, and Larsen's Human Embryology gives a detailed account. Wheater's can be read alongside either, since its organ-system chapters describe the adult tissues whose formation those books trace.

How to Use This Book

The book suits first-year students in medicine, dentistry and the biomedical and life sciences who are meeting microscopy for the first time. No histology background is needed; school-level biology is enough to start.

• Start with the appendices. As Chapter 1 advises, read Appendix 1 on microscopy and Appendix 2 on staining before the main chapters, and keep the glossary to hand.
• Core sequence: Chapters 1–7 (the cell and the basic tissues) in order, since every later chapter assumes them. Chapter 1 is long; read the introduction and membrane sections closely and use the organelle pages as reference.
• Organ chapters: take them in the order of your course's systems blocks rather than straight through. The oral tissues chapter matters most to dental students. Read the clinical boxes in each chapter as you go, but they can be skipped on a first pass.
• At the microscope: use the figure pages as a laboratory guide. Before looking at the legend, try to identify the structures in each micrograph, then check against the label key.
• Revision: use the end-of-chapter review tables for summaries and the self-assessment questions to check understanding before exams.

For depth on cell and molecular mechanisms, pair it with one of the fuller histology texts listed for the course. For disease, use the companion pathology text.