This video provides an informative overview of turtles, highlighting their distinct characteristics, diverse species, and unique adaptations. It explores their evolution, habitats, physical features, reproductive behaviors, and lifespan....

Products that a manufactured and sold in different nations are subject to international agreement. This video explains what are International Contracts and how do they work. Also, this video explains what are the important considerations...

In this video, the teacher explains how the heart is able to contract dependably through its natural pacemaker, the SA node, and other specialized cells. The electrocardiogram (ECG) is also discussed as a highly effective method of...

In this episode, I start talking about skeletal muscle contraction, by giving a general introduction into how muscle contraction happens. I deal with how the action of actin and myosin in the sarcomere results in movement. Enjoy!

In this video, I talk about the isovolumetric contraction of the ventricles. Once the signal travels to the ventricles, the ventricles contract. However, the valves remain closed until the pressure builds up high enough to open those...

In this video, Leslie tells more about the first of six intrinsic shoulder muscles, the deltoid muscle. Furthermore, he gives us a great way of remembering the muscle's origin, insertion, and action by using what we have learned in...

In this episode, Leslie Samuel teaches us about the complex origins, insertions, and actions of the trapezius muscle and latissimus dorsi. Learn how to identify the different actions that each of these muscle does. This and much more!

In this video, we discuss the components of and functions of the electrical conduction system of the heart.

Get more comfortable introducing yourself in English with the video that goes over some common phrases we use when introducing ourselves!

The Black Death changed the world. As the most profound epidemic in human history, the plague claimed the lives of millions, with nearly half of Europe's population perishing from the disease. Some feared they were living through the...