|
|
Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.
![Fights for dominance are normally brief, and sometimes merely displaying dominant gestures without p](https://biology-forums.com/gallery/47/medium_27605_22_04_12_7_14_47.jpeg)
![Antiparkinson Drugs Focus on Restoring Dopamine Function and Blocking Cholinergic Activity in the Ni](https://biology-forums.com/gallery/47/medium_6_26_12_14_9_03_33_196591682.jpeg)