Neuroglia are non-nervous cells present- along with and in between the neurons in central nervous system, ganglia and retina. They have roles like myelin formation, transport of materials to neurons, maintenance of ionic balance and phagocytosis.

Correct Option: C

Neuroglia are non-nervous cells present- along with and in between the neurons in central nervous system, ganglia and retina. They have roles like myelin formation, transport of materials to neurons, maintenance of ionic balance and phagocytosis.

Prominent granules (Nissl’s granules) observed in the cytoplasm of the cyton are believed to be made of ribosomes. A Nissl body (or Nissl granule or tigroid body) is a large granular body found in nerve cells. It was named after Franz Nissl, German neurologist (1860-1919). Nissl bodies can be demonstrated by selective staining, which was developed by Nissl and the stain used was an aniline stain to label extranuclear RNA granules. These granules are rough endoplasmic reticulum (with ribosomes) and are the site of protein synthesis. Nissl bodies show changes under various physiological conditions and in pathological conditions they may dissolve and disappear (karyolysis).

Correct Option: A

Prominent granules (Nissl’s granules) observed in the cytoplasm of the cyton are believed to be made of ribosomes. A Nissl body (or Nissl granule or tigroid body) is a large granular body found in nerve cells. It was named after Franz Nissl, German neurologist (1860-1919). Nissl bodies can be demonstrated by selective staining, which was developed by Nissl and the stain used was an aniline stain to label extranuclear RNA granules. These granules are rough endoplasmic reticulum (with ribosomes) and are the site of protein synthesis. Nissl bodies show changes under various physiological conditions and in pathological conditions they may dissolve and disappear (karyolysis).

The most abundant intracellular cation is K⁺.

Correct Option: C

The most abundant intracellular cation is K⁺.

Myelin sheath wrapped around the nerve axon. Oligodendrocytes are neuroglial cells which produce myelin sheath in central nervous system while Schwann cell produces myelin sheath in peripheral nervous system.

Correct Option: D

Myelin sheath wrapped around the nerve axon. Oligodendrocytes are neuroglial cells which produce myelin sheath in central nervous system while Schwann cell produces myelin sheath in peripheral nervous system.

In poliomyelitis, anterior horn cells of spinal cord are destructed which causes loss of motor activities of limbs.

Correct Option: A

In poliomyelitis, anterior horn cells of spinal cord are destructed which causes loss of motor activities of limbs.