Neuroscience

'Second brain' neurons keep colon moving

Millions of neurons in the gastrointestinal tract coordinate their activity to generate the muscle contractions that propel waste through the last leg of the digestive system, according to a study of isolated mouse colons ...

Cardiology

Rhythm is it: Ion channels ensure the heart keeps time

The heartbeat is the result of rhythmic contractions of the heart muscle, which are in turn regulated by electrical signals called action potentials. Action potentials result from the controlled flow of ions into heart muscle ...

Health

Achilles tendinitis: What is it, and what are the treatments?

Chronic tendon issues are a frequent source of pain and can limit activity. They become more common with age, weight and certain activities, and early and appropriate diagnosis by a doctor is critical to get the best outcomes.

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