|
|
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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.
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.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
![Although the Democrats and the Republicans represent slightly different slices of the center, those ...](https://biology-forums.com/gallery/27/medium_660366_16_04_17_1_11_12_27871298.png)
![Seven steps in neurotransmitter action: (1) synthesis, (2) storage in vesicles, (3) breakdown of any ...](https://biology-forums.com/gallery/30/medium_548020_02_06_17_2_26_26_30263886.png)