Multiple choice

Which of the following pigments are present in the cell body of neuron?

  1. Chromophore

  2. Lipofuscin

  3. Dopamine

  4. Carotenoprotein

  5. Neuromelanin
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B Correct answer
Explanation

Lipofuscin is the name given to finely granular yellow-brown pigment granules composed of lipid containing residues of lysosomal digestion. Lipofuscin or lipochrome is a wear and tear pigment since the number of its granules within the neurons increases with age. These granules are end products of intracellular peroxidation and polymerisation of unsaturated fatty acids. The precise function of lipofuscin is unknown.

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