|
|
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.
People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
![In acute otitis media, the tympanic membrane is usually bulging and purulent fluid is present in the](https://biology-forums.com/gallery/47/medium_14755_07_10_12_3_30_31_935484.jpeg)
![A track inside an ignition coil is not a short, but rather it is a low-resistance path or hole that ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_7_14_04_29839902.png)