On the first evening of Pesach, Jewish families share the special seder meal together. Seder means 'order' and the meal is eaten in a special order with fifteen parts to it. This order is set down in a special book called the Hagadah, which is read during the meal.Everyone takes it in turns to read from the Hagadah.eder means 'order' and the meal is eaten in a special order with fifteen parts to it. This order is set down in a special book called the Hagadah, which is read during the meal. Everyone takes it in turns to read from the Hagadah.
The auditory nerve and the vestibular nerve, which carries balance information from the semicircular canals to the brain, join together as they pass through the bony canals of your skull. Together, they are called the 8th cranial nerve, or the Vestibulocochlear nerve.
In addition to the contribution of sensory information, there may also be psychological factors that impair our sense of balance. Maintaining balance depends on information received by the brain from three peripheral sources: eyes, muscles and joints, and vestibular organs (Figure 1). All three of these information sources send signals to the brain in the form of nerve impulses from special nerve endings called sensory receptors. Figure 1. Balance is achieved and maintained by a complex set of sensorimotor control systems.