Skin & Eye

The urogenital system is a term for the urinary and reproductive systems in human anatomy.
- Urinary Tract
- Reproductive system 

Urogenital system

The digestive system, or gastrointestinal (GI) tract, helps the body digest and process food, starting with the mouth and ending at the anus. The digestive system is vulnerable to pathogenic attacks, hence GI diseases are quite common. Such diseases include those caused by infection or intoxication, the former often being caused by contaminated food and water.

Digestive System

A closed system of organs and vessels that circulate blood around the body to deliver oxygen, nutrients, and immune factors to tissues and to carry out waste products.

Circulatory System

A network of  vessels that manages fluid levels within the body, produces immune cells that combat infection, and filters out foreign bodies.

Lymphatic System

The respiratory system is responsible for bringing oxygen into the body and removing carbon dioxide from it. It includes the nose, lungs, and other structures involved in breathing and gas exchange.

Respiratory System

A human's nervous system is in charge of managing our cognitions, movements, and responses. It is comprised of billions of neurons, glial cells, and the central and peripheral nervous systems. 

Nervous System

An autoimmune disease is a condition that arises when the immune system malfunctions, erroneously identifying the body's own healthy cells as foreign invaders and launching repeated attacks against them. The specific effects of an autoimmune disease vary depending on which part of the body is targeted by the immune response.

Autoimmune Disease

- Skin & Eye
- Respiratory System 
- Urogenital System 
- Digestive System 
- Circulatory System
- Lymphatic System
- Nervous System
- Immune System

Austin Community College

University of Southern Mississippi

University of Wisconsin - Madison

University of Notre Dame

A disease is any condition in which the normal structure or function of the body is damaged or impaired.

Disease

https://openstax.org/details/books/microbiology/

Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

OpenStax Microbiology Textbook

The International Classification of Diseases (ICD) is used in clinical settings to classify diseases and track morbidity (the number of cases of a disease) and mortality (the number of deaths due to a disease) rates.

Classifications of Disease

The five phases of disease are:
- Incubation
- Prodromal
- Illness
- Decline
- Convalescence

Phases of Disease

Signs of disease are objective and measurable, and can be directly observed by a clinician.

Signs of Disease

Symptoms of disease are subjective. They are felt  by the patient, but they cannot be clinically confirmed or objectively measured by a clinician.

Symptoms of Disease

Body Systems Affected by Disease

Psychosomatic disorders are physical illnesses that are thought to arise from emotional or mental stressors, rather than direct physical causes. These conditions demonstrate how psychological factors can significantly influence physical health, often manifesting as pain, fatigue, or other somatic symptoms without an identifiable medical explanation.

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