« previous next »
« previous next »
 

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

A male American redstart, Setophaga ruticilla. A male American redstart, Setophaga ruticilla.
A woman in a net on a Congo shore. Although the importation of slaves was illegal after 1807, histor A woman in a net on a Congo shore. Although the importation of slaves was illegal after 1807, histor
From 1965 to 1968, American troops in Vietnam conducted “search and destroy” missions to shatter ... From 1965 to 1968, American troops in Vietnam conducted “search and destroy” missions to shatter ...
Faith Ringgold, God Bless America, No. 13 from the series American People. Faith Ringgold, God Bless America, No. 13 from the series American People.
Patterns of North American Religion Patterns of North American Religion
American Government: Roots and Reform, AP* Edition, 12th Edition American Government: Roots and Reform, AP* Edition, 12th Edition
Video: Definitions of stroke volume, preload definition & Factors influencing stroke volume

For a complete list of videos, visit our video library