A basic review of the anatomy, physiology and personal protective equipment related to the respiratory system.

The respiratory system is the organs and other parts of your body involved in breathing, when you exchange oxygen and carbon dioxide. All the cells in your body need oxygen to work.

The respiratory system, which includes air passages, pulmonary vessels, the lungs, and breathing muscles, provides oxygenated blood to the body tissues and removes waste gases. Read more .

Bullish (Video) Human Respiratory System: Anatomy, Cilia, and Mucus Membrane Function. Posted: March 6, 2025 | Last updated: March 6, 2025. The film discusses the anatomical and functional ...

The respiratory system in humans – WJEC Breathing Respiration is a chemical reaction which releases energy from food. The respiratory system exchanges the gases which are involved in respiration.

A particularly nasty trifecta of influenza, COVID-19, and respiratory syncytial virus (RSV) is already portending a rough winter. But there’s another factor contributing to a potentially tough ...

The human body is naturally equipped with defenses to fight off viral infections. For a virus to successfully infect it, it must first overcome these defenses. To do so, viruses have evolved ...

The endocrine system consists of glands that make hormones. Your body uses hormones to control growth, development, metabolism, reproduction, mood, and other functions.

The human body’s defensive lineup is impressive—from made-to-order antibodies to natural-born killers. Here’s how it wards off sickness in every season.