Home › AIIMS Nursing › Biology › Neural Control and Coordination › Myelin sheath around an axon is formed by
Myelin sheath around an axon is formed by
Aastrocytes
BSchwann cells
Cmicroglia
Dependymal cells
Answer & Solution
Correct answer: B. Schwann cells
1. Axons are of two types, myelinated and non myelinated.
2. The myelinated nerve fibres are enveloped with Schwann cells.
3. Those Schwann cells form the myelin sheath around the axon.
4. An unmyelinated fibre is still enclosed by a Schwann cell, but no sheath is formed.
_Source: NCERT Class 11 Biology Ch18 'Neural Control and Coordination', section 18.3_
Related questions
Smell receptors in the nose are called:In a reflex arc the afferent neuron enters the spinal cord through the:Pulling your hand off a hot pan without thinking is a:Breathing, cardiovascular reflexes and gastric secretion are controlled by the:The four round swellings on the dorsal midbrain are the:Your body temperature and the urge to eat and drink are set by the:The cerebral cortex looks grey because it is packed with:The two cerebral hemispheres are joined by a fibre tract called the: