Today Hank explains the skeletal system and why astronauts Scott Kelly and Mikhail Kornienko are out in space studying it. He talks about the anatomy of the skeletal system, including the flat, short, and irregular bones, and...

Paul Andersen explains the three types of muscle found in humans; striated, smooth and cardiac muscle. He explains how actin and myosin interact to contract the sarcomere in a muscle. The sliding filament theory explains how ATP and...

Paul Andersen describes the important features of the skeletal system. He starts by comparing and contrasting endoskeletons and exoskeletons. He then explains how the human skeleton provides support, movement, storage, blood production...

Smoking prevalence is way down in the US, and you likely don't need to be screened about Vitamin D deficiency. It's good news all around on Healthcare triage News.

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We all know that calcium is important for strong bones and teeth and there are many different ways to get the calcium you need.

Two main forms of calcium supplements are calcium carbonate and calcium citrate. They're both...

Howcast - It's not just for hippies anymore.

Howcast - Check out this Portal 2 walkthrough and beat Chapter 6 - Part 3: Repulsion Gel Room 2 of 3 with this online demo.

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Howcast - Learn about common diseases in leopard geckos from the animal experts at traveling petting zoo Squeals on Wheels in this Howcast video.

Howcast - Learn if pregnant women should take a prenatal vitamin in this Howcast video

Howcast - Learn what you need to know about calcium supplements from registered dietician Glen Tobias in this Howcast video.

Howcast - Learn how to tweak your supplement-taking for weigh-ins from registered dietician Glen Tobias in this Howcast video.

Howcast - Learn who needs to take calcium supplements from registered dietician Glen Tobias in this Howcast video.

Howcast - Learn about how puberty affects female bone growth from Jennifer Wider, M.D. in this Howcast video.

Howcast - Learn about the three healthiest foods you're probably not eating from nutrition expert Alex Jamieson in this Howcast video.

Howcast - Learn how to get enough calcium to build muscle from DreamBodies' Tony DiCostanzo in this Howcast bodybuilding diet video.

Howcast - Follow these nutritional guidelines for women to lower your risk of disease and cancer.

Howcast - Find healthy recipes during pregnancy to ensure the baby is eating right and you are physically prepared for the delivery.

Howcast - With so many products on the market, it's difficult to know what to purchase. Make sure the vitamin supplements you take are effective for your body's needs and your unique health concerns.