Good news if you already consume tuna on a regular basis, itâs high in niacin compared to many other foods. Itâs also a good source of omega-3s as well as protein. There are concerns about the mercury content, so you may not want to rely on tuna for your daily niacin consumption, but itâs nice to have once in awhile. Serving Size (100 grams), Niacin (5.8milligrams), 184 calories.
At the end of the spinal column is the coccyx or tailbone. Most people have 33 vertebrae in total, although there may be 32 or 34. Variations are usually found in the lumbar or sacral regions.
Confidence votes 1.2K. The spine (also called backbone or vertebral column) starts at the top of your neck, just under the scull, and goes all the way down to your tail-bone. There are 5 regions of the spine: cervical, thoracic, lumbar, sacral, and coccygeal. However the 3 most commonly discussed regions are the cervical, thoracic, lumbar regions. The cervical region is in the neck. The thoracic region is in the upper to mid back. The lumbar region is in the low back.