Which of the following cells possess Nissl's granules?
Correct answer: A. Nerve cells
- A. Nerve cells
- B. WBC
- C. RBC
- D. Platelets
Explanation
Nissl granules are stacks of rough endoplasmic reticulum in the cell body of a neurone, supporting the heavy protein synthesis a nerve cell requires. Mature red blood cells have no nucleus and almost no organelles at all, and platelets are only cell fragments. Their loss after injury, called chromatolysis, is a recognised sign of neuronal damage.
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About Neurons and Nerve Impulse
Neurons receive and transmit information through dendrites, the cell body and axons. The topic explains resting potential, depolarization, repolarization, refractory periods and saltatory conduction, followed by synaptic transmission through neurotransmitters. An action potential is distinct from the graded potential produced at a receptor.
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