Fill in the Blanks A&P Peripheral nerves Unit 2Online version Peripheral nerves by Kirsten Storemski 1 fascicles Schwann axons cells Epineurium efferent afferent endoneurium perineurium fascicles Peripheral nerve structure consists of and surrounded by loose connective tissue called . Groups of axons , Schwann Cells , and endoneurium are surrounded by heavier connective tissue layer called to form . covers many to form a nerve . Nerves consist of and neurons .