« previous next »
« previous next »
 

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

External beam radiotherapy. External beam radiotherapy.
Example of the Index to External Causes. Example of the Index to External Causes.
(A) Internal anatomy of the spinal cord. (B) Ascending spinal tracts. (A) Internal anatomy of the spinal cord. (B) Ascending spinal tracts.
An infant begins to notice the external environment by the age of 4 to 8 months An infant begins to notice the external environment by the age of 4 to 8 months
External Anatomy of the Spinal Cord External Anatomy of the Spinal Cord
The body’s survival depends on mechanisms that maintain internal homeostasis The body’s survival depends on mechanisms that maintain internal homeostasis
Video: Calvin cycle (The light-independent reactions )

For a complete list of videos, visit our video library