This tube is the cartilaginous tube spoken of above and is known as the cartilaginous sheath of the notochord. The Works of Francis Maitland Balfour, Volume III (of 4) Francis Maitland Balfour. This structure is called the notochord (a string down the back).
GM diet stands for General Motors Diet, a 7-day weight loss programme based on an exclusive diet plan. This diet has a strict set of eating instructions for each day of the programme. But being a fast-paced weight loss diet, the diet is also known for its side-effects.
The diet, which is also known as the glycemic index diet or GI diet, emphasizes unprocessed foods, complex carbs and food combining. It was originally developed as a diet to help diabetes patients regulate their blood sugar and, according to WebMD, is still most effective in this capacity.