प्र: Which of the following is not correct concerning nerves?

• 1
  Axons make up a majority of the matter in a nerve.
• 2
  Nerves are collection of axons of either sensory or motor neurons but not both.
• 3
  Nerves are covered by an outer sheath called the epineurium
• 4
  Nerves consist of parallel bundles of myelinated and nonmyelinated axons.