« previous next »
« previous next »
 

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

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?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Some male birds and mammals congregate in communal courting grounds called leks. Some male birds and mammals congregate in communal courting grounds called leks.
Angioplasty. One form is called balloon angioplasty, shown here. A balloon catheter is threaded into Angioplasty. One form is called balloon angioplasty, shown here. A balloon catheter is threaded into
Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called
The injector on-time is called the pulse width. The injector on-time is called the pulse width.
Corbel Vault, Interior of Tholos, The So-called Treasury of Atreus Corbel Vault, Interior of Tholos, The So-called Treasury of Atreus
The synapse and synaptic transmission. (a) A thin cleft, called the synapse, separates one cell from The synapse and synaptic transmission. (a) A thin cleft, called the synapse, separates one cell from
Video: Enzyme-Catalyzed Reactions

For a complete list of videos, visit our video library