« previous next »
« previous next »
 

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Pathways of arachidonic acid metabolism: Mechanisms of pain. Pathways of arachidonic acid metabolism: Mechanisms of pain.
The Citric Acid Cycle The Citric Acid Cycle
Major regulatory factors controlling pyruvate dehydrogenase and the citric acid cycle Major regulatory factors controlling pyruvate dehydrogenase and the citric acid cycle
Acid–Base Balance Acid–Base Balance
Acid–Base Balance Acid–Base Balance
Phylogenetic tree constructed by comparing homologies in cytochrome c amino acid sequences Phylogenetic tree constructed by comparing homologies in cytochrome c amino acid sequences
Video: Basic rhythm - control centers in medulla oblongata, spirograph and normal tidal cycle

For a complete list of videos, visit our video library