This clip picks up right where the Khan Academy's Photosynthesis video left off. Chemicals such as hydrogen and compounds such as NADPH are reviewed along with details including the stroma, thylakoid, lumen, and grana. See the parts of a...

A detailed account of what occurs inside the nephron, allowing ions to be transported out of the lumen. [14:13]

The light-dependent reactions that occur during photosynthesis. [20:16]

This lesson will describe the structure, including the four layers, of the digestive tract. It is 1 of 5 in the series titled "Layers of the Alimentary Canal."

An aortic dissection is a life-threatening condition where there is a separation of the layers in the wall of the aorta. This video describes the aorta and what causes a dissection. [13:38]