Which of the following is regarded as a unit of nervous tissue?

Four healthy people in their twenties were involved in injuries resulting in damage and death of a few cells of the following types. Which of these cells are least likely to be replaced by new cells?

Neurons are different from other cells due to the presence of which of the following?

Differentiate between medullated nerve fibers and non-medullated nerve fibers.

Which of the following statements is true?

The ..... nerve fibres are enveloped with Schwann cells,which form a myelin sheath around the axon.