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.
The spinal cord has a cone shaped end which is termed as conus medullaris. It is located between the end points of thoracic vertebrae or T-12 and at the starting of lumbar vertebrae or L-1. Very rarely, it is also located between L-1 and L-2.ometimes constriction or unwanted pressure affects the functioning of nerves located in the conus medullaris. This condition is termed as medullaris syndrome. This external pressure can originate from a tumor or hematoma.