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.
At the pointed end of the conus medullaris, the nerve roots of the spinal cord continue in a dangling formation called the cauda equina, which resembles a horseâs tail. Because the conus medullaris resides in the lower back, injuries or conditions of the lumbar spine can affect this terminal end of the spinal cord.t is normally located between the end of the thoracic vertebrae (T12) and the beginning of the lumbar vertebrae (L1), though sometimes the conus medullaris is found between L1 and L2. Nerves that pass through the conus medullaris control the legs, genitals, bladder and bowel.