We've all heard the theories on why the dinosaurs died -- but how did they come to dominate the earth for so long in the first place? (Hint: it has nothing to do with their size, speed, spikes or fantastic feathers.) Travel back in time...

This is a short video tutorial introducing the parasympathetic nervous system.

This video discusses the respiratory disorder asthma, including its causes, symptoms, diagnosis, and treatment. It also includes a detailed explanation of the anatomical factors involved in asthma and potential triggers that can cause...

Histological appearance of normal lung tissue and its components.

A former US Marine discusses the health consequences of exposure to toxic chemicals, particularly from burn pits in Iraq, and the lack of support from the government for veterans. Using cadavers in a lab, he explains how the chemicals...

This video tutorial briefly covers the sympathetic and parasympathetic role on lung innervation. It focuses on the following: - Sympathetic neurotransmitters (epinephrine and nor-epinephrine) and receptors (adrenergic). - Parasympathetic...

Pleural membranes

This video discusses the causes, risks, and anatomy of pneumonia, a serious lung disease that can lead to up to 50,000 deaths per year. The video explains how the infection spreads to the lungs, the role of the immune system, and the...

Learn the fine structure of the lungs.