This article discusses the autonomic nervous system, which is responsible for involuntary reactions such as heart rate, blood pressure and respiration. This is a Self-assessment article and comes with ...

The film discusses the anatomical and functional significance of the nose, throat, and ears from a medical perspective. It explains how the nose functions as an air passage that warms and filters ...

This reconstruction shows more than 1,000 of the 120,000 brain cells captured by the MICRONS project, described below. Each reconstructed neuron is a different random color, and a subset of the ...

The popliteal lymph nodes lie in the tissues behind a person’s knee. Many conditions can cause them to swell, such as infections and autoimmune conditions. It is rare for cancer to affect the ...