Quick Answer. The Boxing Day tsunami that occurred on Dec. 26, 2004, was caused by an earthquake of above 9 magnitude in the Indian Ocean. The earthquake was caused by the movement of the Indio-Australian tectonic plate as it subducted below the Eurasian plate, causing the seafloor above it to lift upwards. Continue Reading.
Exubera, an inhalable form of insulin. Credit: Frank Rumpenhorstâdpa /Landov. For people with diabetes mellitus, the year 1921 is a meaningful one. That was the year Canadian physician Frederick Banting and medical student Charles H. Best discovered the hormone insulin in pancreatic extracts of dogs.On July 30, 1921, they injected the hormone into a diabetic dog and found that it effectively lowered the dogâs blood glucose levels to normal.hat was the year Canadian physician Frederick Banting and medical student Charles H. Best discovered the hormone insulin in pancreatic extracts of dogs. On July 30, 1921, they injected the hormone into a diabetic dog and found that it effectively lowered the dogâs blood glucose levels to normal.
Insulin is released when glucose concentration in blood is high (e.g. following an intake of carbohydrate-rich diet). Insulin regulates the concentration of glucose and other sugars circulating in blood by stimulating the uptake of glucose by cells in liver, skeletal muscles and fat tissues. The lack of or inadequate insulin production results in diabetes mellitus. Thus, insulin has also been prepared pharmacologically for use in managing diabetes. In humans and other vertebrates, the pancreas is a glandular structure that has exocrine and endocrine functions.