• Crankenstein@lemmy.worldEnglish
      19·
      2 days ago

      You know how human teeth have those prong bits that anchor into the gums, the “root”? Inside those are the nerve canals: spaces filled with a pulp that nerve endings run through.

      Shark teeth don’t have these canals in their root. Their teeth aren’t anchored into the gums and don’t connect to any nerve endings.

      • Anomalocaris@lemm.eeEnglish
        1·
        9 hours ago

        that’s why they can have so many teeth,

        imagine humans with10 times the amount of teeth, and therefore 10 time more likely to get tooth ache.

        • Crankenstein@lemmy.worldEnglish
          15·
          2 days ago

          Uhhh… Actually, after giving it some thought, yea probably. Might lose a few teeth in the process though.

            • Crankenstein@lemmy.worldEnglish
              14·
              2 days ago

              This was fun researching and theorizing. Thanks for asking.

              We experience brain freezes when a sharp temperature drop comes into contact with the roof of the mouth and back of the throat, causing the blood vessels to constrict, which in turn causes the arteries in the brain to expand. It isn’t exactly clear where the “pain” comes from though; it is theorized that the arterial wall’s expansion triggers the trigeminal nerve (relays sensory info between face and brain) and is registered as a pain sensation.

              Shark anatomy is entirely different in structure, such as they don’t have the same complex nervous system. Also, considering they are ectotherms, their body responds in completely different ways to changes in temperature than we do.

              So considering what we know about shark physiology and the current theory on the mechanics behind “brain freezes”, probably not.