Histology- Nervous Tissue 1st Year PMU

By light microscopic observation of spinal cord on transverse sections stained with toluidinblue, multipolar neurons with cytoplasm filled with blue granules in the anterior horns are observed. What is the name of these structures and the appearance of which organelle are they? Ans: [blank_start]Nissl Substance[blank_end]

Under electron microscope, a transverse section of cylindrical in shape structure with dark and light lines arranged in concentric manner is observed. Peripherally, a part of cytoplasm with mitochondria and nucleus is visible. What is the name of the described structure? Ans: [blank_start]Myelinated Nerve Fiber[blank_end]

Under light microscope, on sections from cerebrum stained with AuCl2 star-shaped neurons with numerous long non-branching processes localized in the white matter are observed. Some of the processes attach to the blood vessels wall. What is the name of these cells and what is their function? Ans: [blank_start]Fibrous Astrocytes[blank_end]

Under light microscope. on sections stained with 0s04 bundles of black colored fiber-like structures appear. There are gaps in their outer sheath and it is seen to be an incomplete or interrupted cylinder. Radial clefts or fissures, extending through the thickness of the sheath are also visible. What is the name of the described structures? Ans: [blank_start]Myelinated Nerve Fibers[blank_end]

The neurons show regeneration ability

The neuroglial cells conduct a nervous impulse

By light microscope observation the Nissl substance is visible in the axons:

Only one axon takes part in the formation of the myelinated nerve fibers

Only one axon takes part in the formation of the nonmyelinated nerve fibers:

The bodies (perikaryons) of the neurons are localized in the white matter:

What embryonic sheet derive the neurons from:

What embryonic sheet derive the macroglia from:

What embryonic sheet derive the microglia from:

The pseudounipolar neurons consist of:

The mutipolar neurons consist of:

Which of the following elements of the cytoskeleton are well developed in the neurons:

Which of the following types of neuroglial cells are localized in the grey matter:

The sheath of the nerve fibers in the peripheral nervous system is built from:

The sheath of the nerve fibers in the central nervous system (white matter) is built from:

Which of the following neuroglial cells take part in the production of the cerebro-spinal fluid

Which of the following characteristics are specific for the neurons

Which of the following characteristics are specific for the neuroglial cells:

Which of the following elements are visible in the neurons by light microscopic observation

The nonmyelinated nerve fibers consist of:

The myelinated nerve fibers consist of: