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.
Back pain diagnosis often includes the name of the part of the spine that is involved in causing the pain. Learn about the parts of the spine. The spine is made of 24 individual vertebrae, that go from the skull to the sacrum. The sacrum bone - which is really 5 bones that begin to fuse at about age one, with the fusion complete approximately by age 30 - plus the coccyx complete the spine at the bottom. (The coccyx is your tailbone, and is the very last bone of the spine.) The spine connects to the ribs and pelvis to make the trunk or core.