Welcome to the Blood Module!
Blood is essential to life. Every second, it travels through your body delivering oxygen, nutrients, and hormones to cells while removing waste products. Blood also plays a critical role in protecting the body from infection and preventing excessive blood loss when injuries occur.
In this module, you will explore the structure, function, and clinical significance of blood. You will learn about the different components of blood, how blood cells are formed, and how blood types are determined. You will also examine several important blood-related diseases, including sickle cell disease and leukemia, and explore how genetics and molecular biology can be used to analyze blood evidence.
This module also highlights important Equity, Diversity, and Inclusion (EDI) considerations in medicine. Conditions such as sickle cell disease demonstrate how genetics, ancestry, environment, and healthcare access intersect. Understanding these factors is important for developing equitable healthcare systems and improving patient outcomes.
By the end of this module, you will have a deeper understanding of how blood supports life and how scientific tools are used to study blood at both the cellular and molecular level.

Table of Contents:
1. Introduction to Blood
- What’s in Blood?
- Blood Composition
- Blood Diseases
2. Blood Formation (Hematopoiesis)
5. Blood Typing
6. Blood Diseases
7. Molecular Analysis of Hemoglobin
8. Equity, Diversity, and Inclusion in Blood Disorders
9. Case Studies
10. Summary
11. Vocabulary (all)
Learning Objectives
By the end of this module, you should be able to:
- Describe the major components of blood and their functions
- Identify the different types of blood cells and their roles in the body
- Explain how blood cells are produced and regulated
- Understand the ABO and Rh blood group systems and how blood typing works
- Describe common blood disorders, including sickle cell disease and leukemia
- Interpret complete blood count (CBC), differential white blood cell counts, and blood smear data to identify, compare, and explain hematological disorders in clinical case studies
- Explain how genetic mutations affect hemoglobin structure
- Understand how molecular techniques such as PCR and gel electrophoresis can be used to analyze DNA
- Discuss how Equity, Diversity, and Inclusion (EDI) factors influence health outcomes in blood-related diseases
How to Use This Module
This learning module includes a variety of materials designed to support different learning styles.
Throughout the module you will find:
- Illustrations and microscope images of blood cells
- Interactive activities and quizzes to reinforce concepts
- Case studies that apply concepts to real-world scenarios
- Clinical connections highlighting the relevance of blood science in healthcare
We encourage you to explore each section carefully and engage with the interactive elements to deepen your understanding of the material.