|
|
The human body produces and destroys 15 million blood cells every second.
A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.
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.
![An emergency medical technician positions defibrillator paddles on the chest of a supine male patien](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_23_56_85331131.jpeg)
![Lumbar puncture. Abbreviated LP, the lumbar puncture is a common procedure that withdraws cerebrospi](https://biology-forums.com/gallery/47/medium_14755_14_10_12_6_49_35_94142278.jpeg)