« previous next »
« previous next »
 

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Neurulation and the beginning of neural crest formation in vertebrates. Neurulation and the beginning of neural crest formation in vertebrates.
animal cell animal cell
The birth weight of human infants is tightly constrained by natural selection. The birth weight of human infants is tightly constrained by natural selection.
New England children like David, Joanna, and Abigail Mason (painted by an unknown artist around 1670 New England children like David, Joanna, and Abigail Mason (painted by an unknown artist around 1670
Everyday situations sometimes present opportunities for children to build information processing ... Everyday situations sometimes present opportunities for children to build information processing ...
The humoral and cellular immune response. At the left is the humoral (or B-cell mediated); at the ... The humoral and cellular immune response. At the left is the humoral (or B-cell mediated); at the ...
Video: Carbohydrate digestion (brush border enzymes, end products) & Carb absorption (fructose, galactose)

For a complete list of videos, visit our video library