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

The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is ...

The UCLA advance opens the door to growing other vascularized organ models, including intestines and colons, providing ...

As our virtual heart tour continues, we gather around a bisected heart, watching valves open and close. The teacher prompts us to trace the blood flow — “oxygenated or deoxygenated?” he asks.

MRI evidence shows modest urban haze stiffens heart tissue, marking air pollution as a stealth cardiac saboteur beyond traditional risks like smoking.

Scientists from QIMR Berghofer's Cardiac Bioengineering Lab have developed lab-grown, three-dimensional heart tissues known ...

In TODAY.com's Expert Tip of the Day, a cardiologist explains why neglecting your "second heart" can lead to health ...

For those who don’t typically walk regularly, six minutes can seem daunting. However, this brief duration is significant for ...

Letter Published: 02 July 1966 Deposition of Inhaled Particles in Human Lungs C. N. DAVIES & D. C. MUIR Nature 211, 90–91 (1966) Cite this article ...

Even after decades of research, biologists are still uncovering surprises about the human body. A team of researchers from ...

Exercise can temporarily increase blood pressure or lower it slightly. Learn more about when to talk to your doctor, blood pressure readings, and safety tips.

Centene's Guidance Withdrawal Spooks Sector, Oscar Health Stock Falls Trump-Administration's Health Agency Overstepped Authority, Reorganization Unlawful: Court Obama Warns 16 Million Americans ...