Corpora arenacea are seen in which of the following organs?

Discussion in 'Question Zone' started by samuel, Dec 11, 2013.

  1. samuel

    samuel New Member

    Corpora arenacea are seen in which of the following organs?
    a) Posterior pituitary gland
    b) Anterior pituitary gland
    c) Pineal gland
    d) Prostate gland
  2. samuel

    samuel New Member

    Ans: c) Pineal gland
    Ref: Last’s Anatomy: Regional and Applied; 10/e, pg 464.
    • The pineal gland projects from the posterior wall of the third ventricle, lying above the superior colliculi of the
    midbrain.
    • It is a soft, conical body, less than half a centimeter long, and is one of the few regions with no blood-brain
    barrier.
    • It contains a number of corpora arenacea. These calcify, and to such an extent that after the age of 40
    years, they may throw a tiny shadow in the radiographs of the skull.
    • A displaced calcified pineal indicates a space-occupying lesion above the tentorium.
    Note: Corpora amylacea are found in the prostate gland (option ‘d’)

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