Myelin sheaths are found: a) surrounding tendons b) covering the brain c) covering muscles d) around axons of neurons
option d. The myelin sheath is a significantly prolonged and changed plasma membrane wrapped across the nerve axon in a spiral fashion [1]. The myelin membranes originate from and are part of the Schwann cells withinside the peripheral anxious system (PNS) and the oligodendroglial cells withinside the critical apprehensive system (CNS)
