« previous next »
« previous next »
 

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

This engraving by William Russell Birch shows Congress Hall (left), which was occupied by Congress f This engraving by William Russell Birch shows Congress Hall (left), which was occupied by Congress f
Hannah Höch, Cut with the Kitchen Knife Dada through the Last Weimar Beer Belly Cultural Epoch of ... Hannah Höch, Cut with the Kitchen Knife Dada through the Last Weimar Beer Belly Cultural Epoch of ...
Commonly Used grades of Austenitic Stainless Steel Commonly Used grades of Austenitic Stainless Steel
Blunt percussion over the left costovertebral angle Blunt percussion over the left costovertebral angle
Calculate the velocity of the red rock after collision Angle measured counterclockwise from the ... Calculate the velocity of the red rock after collision Angle measured counterclockwise from the ...
When viewed from the Earth, Venus subtends an angle of about 1 arcminute (1/60°) when it is at ... When viewed from the Earth, Venus subtends an angle of about 1 arcminute (1/60°) when it is at ...
Video: Embryonic development - week 1 and 2

For a complete list of videos, visit our video library