« previous next »
« previous next »
 

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Conduction system of the heart. Conduction system of the heart.
The male reproductive system. The male reproductive system.
The cardiovascular system. The cardiovascular system.
Principle Structures of the Limbic System Principle Structures of the Limbic System
The cell duplicates its DNA and prepares for nuclear division The cell duplicates its DNA and prepares for nuclear division
Respiratory response to increased activity levels Respiratory response to increased activity levels
Video: Muscle Fatigue and Recovery

For a complete list of videos, visit our video library