This chapter steps back from regions and maps the body as a living network of systems - each one specialised, yet deeply interdependent. If Chapter 2 gave us the language of anatomy, this chapter gives us its living context.

We begin at the smallest scale: the cell, the fundamental unit of life. Cells organise into tissues, tissues into organs, and organ…

This chapter is the grammar of anatomy - the quiet framework that allows everything else to make sense. Before we explore structures, we must first understand how anatomists think, describe, and orient themselves within the human body.

At its core, anatomy is a spatial science. It does not simply name structures; it describes their relationships. To do t…

This opening chapter is not about structures - it is about seeing. It traces the long arc of anatomical curiosity, from early cranial surgery thousands of years ago to the disciplined dissections of Renaissance Europe. What begins as fascination becomes method, and what begins as observation becomes science.

We follow the evolution of anatomical thought:…

International public health is entering a period of profound transformation. Globalisation, climate change, demographic shifts, pandemics, digital surveillance technologies, and geopolitical realignments are reshaping both risk and response.

This chapter examines the evolving role of multilateral organisations, global financing mechanisms, pandemic prepa…

Public health is not funded or delivered by governments alone. Philanthropic foundations, private donors, non-governmental organisations, corporate partners, and social enterprises play an increasingly prominent role in financing, research, service delivery, and advocacy.

This chapter examines the evolution of private sector engagement in public health, …

Environmental, chemical, and radiation emergencies present complex and potentially invisible threats to population health. Industrial spills, toxic releases, nuclear incidents, and accidental exposures demand rapid assessment, specialised expertise, and coordinated containment.

This chapter explores hazard identification, exposure pathways, toxicology, d…

Emergencies - whether natural disasters, armed conflict, epidemics, or sudden displacement - disrupt infrastructure, overwhelm health systems, and expose populations to acute risk. Public health in emergencies requires speed, coordination, and ethical clarity.

This chapter explores rapid health needs assessment, emergency surveillance, outbreak control, …

Local health workers - including community health workers, village health volunteers, and lay health providers - are essential to delivering primary care, health promotion, vaccination, maternal support, and disease surveillance in many settings.

This chapter explores the training, supervision, integration, and sustainability of local health worker progr…

Effective public health systems depend on skilled professionals capable of surveillance, programme design, outbreak response, policy analysis, and leadership. In many low- and middle-income countries, workforce shortages, migration, limited training infrastructure, and funding constraints pose significant challenges.

This chapter examines strategies for …

Health services strategies determine how care is delivered, funded, prioritised, and evaluated. This chapter explores models of healthcare organisation, including universal coverage systems, insurance-based systems, and mixed models. It considers primary care strengthening, referral systems, integration of services, and performance management.

Attention …