Axolotls are amazing pets! Join Jessi and Squeaks as they learn about why axolotls have feathery gills and live in water, and how to protect their natural habitat.



First Grade Next Generation Science...

Usually, the 160,000 kilometers of blood vessels in your body work incredibly smoothly. However, the forces of age, weight gain, and gravity can conspire to cause lumpy varicose veins.

Have you ever wondered what happens to a painkiller, like ibuprofen, after you swallow it? Medicine that slides down your throat can help treat a headache, a sore back, or a throbbing sprained ankle. But how does it get where it needs to...

For ages I’ve been thinking about doing a video analyzing time travel in fiction and doing a comparison of different fictional time travels – some do use wormholes, some relativistic/faster than light travel with time dilation, some...

Paul Andersen explains how hugs between tissues can help maintain homeostasis. Countercurrent heat exchange allows heat to stay within the core of the body. Close contacts between the capillaries and alveoli allow our body to maintain...

You've probably been told that eating too much salt is bad for you, especially if you have high blood pressure. But what exactly does salt do to our bodies that can make it so hard on our hearts?

Paul Andersen surveys the circulatory system in humans. He begins with a short discussion of open and closed circulatory systems and 2,3, and 4-chambered hearts. He describes the movement of blood through the human heart and the blood...

Hank takes us on a trip around the body - we follow the circulatory and respiratory systems as they deliver oxygen and remove carbon dioxide from cells, and help make it possible for our bodies to function.

Howcast - Learn what happens when testicular cancer spreads in this Howcast video.

The vein, which is really an intestine, is unsightly and gritty. Will eating it hurt you? No. Does it look nice? Not so much. So devein away.

Varicose veins, a common condition characterized by dilated veins and pooling of blood in the lower extremities, can be unsightly and painful. In the past, treatment involved major surgery and weeks of recovery. However, with the...

My battery is low and it's getting dark. NASA's Opportunity has come to the end of a 15 year mission on Mars. But what did it do? This episode focuses on Endeavour Crater, Esperance and Cape York!

Experts use veins to draw blood for blood testing, blood donation, and more because the structure and position of veins make it easier to draw blood out of as compared to arteries. It may also be dangerous to draw blood from arteries.

Dr. Forrester teaches about your circulatory system and muscular system.

This video showcases a performance from "A Midsummer Night's Dream" where Quince and Bottom, along with other craftsmen, gather to assign roles for their play, "The Most Lamentable Comedy and Most Cruel Death of Pyramus and Thisbe." The...

This video covers the structure and function of the heart, the double circulatory system, the associated blood vessels, pacemaker cells and the coronary arteries.

In this episode of 3 Minuten Deutsch I explain how to use the question words "wer", "wen", and "was" (who, whom, and what).

This is an overview of all of the German question words including the wo-compounds. The entire list includes: wer (0:42), wen (1:26), wem (3:03), wessen (5:15), was (6:11), wo-compounds (6:42), wo (10:05), wohin (10:34), woher (11:20),...

In this video I explain the worksheet that goes with the German with Puppets Series #1 episode about the difference between "wer", "wen", and "was" in German. You can see that video here:...

“Circulatory System” identifies the parts and purposes of the circulatory system.

This video is answering the question of what do different veins and arteries do in the body.

Pulmonary Embolism is a potentially life-threatening medical condition caused when a blood clot (Embolus) gets stuck in a pulmonary artery. The origin of the embolus is most likely a Deep Vein thrombus (DVT) of the leg. I made an...

Control valves regulate flow, pressure, temperature and liquid levels. These regulations are maintained through a process of partially or fully opening and closing valves. These control valves receive signals from controllers...

In this video we discuss the following:<br/>
[1] the major arterial and venous supply to the anterior abd<br/>ominal wall
[2] the blood supply to major muscles in this region