Myelin is an insulating layer that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty substances.
The purpose of the myelin sheath is to allow impulses to transmit quickly and efficiently along the nerve cells. If myelin is damaged, the impulses slow down. This can cause diseases such as
For the past two summers I have driven to Ithaca, New York, to take a five-day course at Cornell Adult University. Ithaca is at its best... Read more »
Hi everyone. I'd like to tell you about various skin cancers and where they arise in the skin. Specifically, I want to clarify why one... Read more »
You may have spotted a brief news report in recent years about stem cell research conducted in Austria and more recently in Canada for... Read more »
Creating new brain cells was previously thought to be impossible in humans, but not any more. And you don't need to have an injection of... Read more »
The New York Times ran an interesting article last week by Benedict Carey about a new study on the brain which may lead to a new line of... Read more »
Source: ADAM Encyclopedia
InformationAll vital organs begin to lose some function as you age. Aging changes have been found in all of the body's cells, tissues, and organs,... Read more »
Source: HealthCentral Encyclopedia
Squamous cell carcinoma is a type of skin cancer containing squamous cells.Squamous cell carcinomas can be found in many parts of the body including... Read more »
Source: ADAM Encyclopedia
Sickle cell disease (also called sickle cell anemia) is an inherited blood disorder that affects red blood cells. The sickle cell gene causes the... Read more »
Source: HealthCentral Encyclopedia
Basal cell carcinoma is a type of skin cancer. It is a malignant epithelial cell tumor that begins as a papule (a small, circumscribed, solid... Read more »
Source: HealthCentral Encyclopedia
Article updated and reviewed by Kevin Knopf, MD, MPH; Director of Clinical Research, Annapolis Oncology Center and Associate Staff, Johns Hopkins... Read more »