« previous next »
« previous next »
 

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Sagittal section of upper respiratory system illustrating the internal anatomy of the nasal cavity, Sagittal section of upper respiratory system illustrating the internal anatomy of the nasal cavity,
Endotracheal intubation. First, a lighted scope is used to identify the trachea from the esophagus. Endotracheal intubation. First, a lighted scope is used to identify the trachea from the esophagus.
The respiratory system: nasal cavity, pharynx, larynx, trachea, bronchus, and lung with expanded vie The respiratory system: nasal cavity, pharynx, larynx, trachea, bronchus, and lung with expanded vie
Nose, nasal cavity, and pharynx: (A) nasal cartilages and external structure; (B) meatus and positio Nose, nasal cavity, and pharynx: (A) nasal cartilages and external structure; (B) meatus and positio
The respiratory system. (a) Sagittal section of the head and neck, revealing the organs of the upper The respiratory system. (a) Sagittal section of the head and neck, revealing the organs of the upper
Pharynx "Pharynx" Pharynx "Pharynx"
Video: How does an animal choose what food to eat?

For a complete list of videos, visit our video library