|
|
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.
When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
On average, the stomach produces 2 L of hydrochloric acid per day.
To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.
![Compressing the breast between plates provides a better image of breast tissue. Regular mammograms ...](https://biology-forums.com/gallery/47/medium_660366_13_03_17_1_49_42_26876412.jpeg)
![This red gasoline container holds about 30 gallons of gasoline and is used to fill vehicles used ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_3_10_42_295132149.png)