Articles in Who Knew?
On average, we produce 1.5 liters of saliva a day – the equivalent of 2 bottles of wine! Anything less than 0.1ml/hr constitutes dry mouth – a seemingly benign problem that can lead to dental …
For a fascinating account of the history of human cadavers in research, look no further than Mary Roach’s book, Stiff: The Curious Lives of Human Cadavers. Just how much a human stomach will hold depends …
Types of intestinal transplantation
A total of 185 intestinal transplantations were performed in 2008. Intestinal transplantations involve at a minimum, the transplantation of the small bowel (also referred to as the small intestine or jejunoileum) but …
I had a patient in her early 50s who came to me recently concerned about a number of small, round, raised, bright red lesions that were appearing on her trunk. Although they were painless, she was concerned about …
There are three phases to a cough which impacts its velocity:
inspiratory phase where pressure builds up in the thoracic cavity
the compressive phase when the thoracic and abdominal muscles contract
expiratory phase when the air is rapidly expelled
According to the …
Viruses can not replicate outside of a living cell. Said another way, a virus needs to be in a living host in order to reproduce because it lacks the necessary cellular structures to do so. …
When you think of a sprain, think of an ankle, the most common sprain people get (25,000 ankle sprains/day according to NIH). Ankles have lots of ligaments that attach bone to bone and it’s these …
The bladder holds approximately 250-350 cc of urine and when it’s completely full, about 600 ccs (17 ounces or so). In extreme circumstances, it can hold more but this would generally cause much pain and discomfort.
When …
As we age, our respiratory tract becomes less elastic and more rigid including the tiny air sacs where oxygen exchange occurs. In addition, our chest wall becomes a little more rigid, not expanding in the …
Vitamin D (which acts like a hormone in our bodies) and its precursors play many roles in the body. It helps:
the body absorb calcium
play a role in bone growth
prevent rickets in children and osteomalacia (adult form …
