« previous next »
« previous next »
 

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Examples of animals with external gills. Examples of animals with external gills.
scanning electron micrograph showing an ovum (pink) released by the ovary at ovulation surrounded by scanning electron micrograph showing an ovum (pink) released by the ovary at ovulation surrounded by
Diverticulosis. Figure illustrates external and internal appearance of diverticula. Diverticulosis. Figure illustrates external and internal appearance of diverticula.
External acoustic meatus External acoustic meatus
Internal and external attributions Internal and external attributions
Website Feature (Anonymous) Website Feature (Anonymous)
Video: Structures that affect circulation - venous return

For a complete list of videos, visit our video library