Khan Academy: Human Body Systems: Intro to the Endocrine System

A slide for each major organ of the human digestive system has been collected for this compact presentation. On each slide are bullet points listing characteristics and functions of an organ. The slides are plain white with a single,...

A collection of interactive, self-checking quizzes on human body systems. Covers muscular, skeletal, circulatory, nervous, and respiratory systems.

Understand the process of urination in the human body.

Ever wondered why your temperature stays at 98.6 degrees? Learn about homeostasis and how your body maintains a stable temperature. [3:39]

This video is a correction to sodium and potassium pump video showing that the main cause of the potential difference between the outside and inside of the membrane is due to fact that the membrane is highly permeable to potassium and...

[Free Registration/Login Required] Create a science test that checks for student understanding in science, for common misconceptions, as well as for correct ideas. This is a list of key ideas related to Human Body Systems. For each key...

A learning module that is "designed to give you basic information needed to build a foundation that will allow you to have a better understanding of many human biology concepts. You will understand how organisms are classified, get an...

Understand the role of phagocytes in innate or nonspecific immunity. Neutrophils, macrophages, and dendritic cells. [16:20]

Learn about viral replication: Lytic vs Lysogenic. [5:11]

Understand the difference between self and non-self immunity. [14:28]