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.
Name of bone. Sacrum. The sacrum is a large, triangular bone at the base of the spine and at the upper and back part of the pelvic cavity, where it is inserted like a wedge between the two hip bones. Its upper part connects with the last lumbar vertebra; the bottom part, with the coccyx (tailbone). In children, it consists of usually five unfused vertebrae which begin to fuse between ages 16 and 18 and are usually completely fused into a single bone by age 26.