« previous next »
« previous next »
 

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Summation of Heart Sounds, Normal S1 Summation of Heart Sounds, Normal S1
Refraction; A, normal eye; B, myopia; C, hyperopia. Refraction; A, normal eye; B, myopia; C, hyperopia.
Cumulative Standard Normal Distribution Cumulative Standard Normal Distribution
Normal tympanic membrane with cone of light and process of malleus Normal tympanic membrane with cone of light and process of malleus
Loss of brain cells in a transgenic Huntington-disease mouse. (a) Section of normal mouse-brain stri Loss of brain cells in a transgenic Huntington-disease mouse. (a) Section of normal mouse-brain stri
Action of FMRP protein in normal and fragile-X cells Action of FMRP protein in normal and fragile-X cells
Video: Autonomic Nervous System Animation

For a complete list of videos, visit our video library