The covering of myelin sheath of nerve fibres is discontinuous to help in A. Continuous conduction of nerve impulse B. Nerve impulse become slow due to discontinuous sheath C. Nerve impulse become fatvdye to saltatory conduction D. There is no conduction of nerve impulse
Option 2. The rate of impulse conduction in a nerve depends on the diameter of a fibre and the presence or absence of myelin. Neurons with myelin conduct impulse much faster than those without myelin. Schwann cells (or oligodendrocytes) are located at regular intervals along the axons. Between areas of myelin are non-myelinated areas present, called as the nodes of Ranvier. Because fat (myelin) acts as an insulator, membrane coated with myelin does not conduct an impulse. So, in a myelinated neuron, action potentials only occur along the nodes and, therefore, impulses jump over the areas of myelin, going from node to node in a process called as saltatory conduction
