|
|
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.
Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.
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.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
![As sessile organisms, plants have evolved many mechanisms to mitigate the potential damage of abioti](https://biology-forums.com/gallery/47/medium_33_25_07_11_12_57_31.jpeg)
![These two desert arthropods, a scorpion and a cicada, have evolved very different approaches to livi](https://biology-forums.com/gallery/47/medium_33_08_09_11_10_42_12_1679804.jpeg)