« previous next »
« previous next »
 

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

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.

Open, or compound The fracture projects through the skin and there is a possibility of infection or Open, or compound The fracture projects through the skin and there is a possibility of infection or
Oral cavity: (A) sagittal section; (B) anterior view as seen through the open mouth. Oral cavity: (A) sagittal section; (B) anterior view as seen through the open mouth.
Examples of open and closed ended questons Examples of open and closed ended questons
Ethics in social research are of vital concern to sociologists. As discussed in the text, ... Ethics in social research are of vital concern to sociologists. As discussed in the text, ...
Block open the throttle (and choke, if the engine is equipped with a carburetor). Here a screwdriver ... Block open the throttle (and choke, if the engine is equipped with a carburetor). Here a screwdriver ...
Afterload is the pressure that the ventricles must overcome in order to open the aortic and pulmonic Afterload is the pressure that the ventricles must overcome in order to open the aortic and pulmonic
Video: Miller's reaction chamber experiment Animation

For a complete list of videos, visit our video library