brain sand

Surely, he knows we're a patchwork, your brain Sand my body.

Concentrations of "brain sand" increase with age, so the pineal gland becomes increasingly visible on X-rays over time, usually by the third or fourth decade.

Hydroxylapatite crystals are also found in the small calcifications (within the pineal gland and other structures) known as corpora arenacea or 'brain sand'.

Human follicles contain a variable quantity of gritty material, called corpora arenacea (or "acervuli," or "brain sand").

Calcification of the pineal gland is largely associated with corpora arenacea (or "acervuli," or "brain sand").

Corpora arenacea (or brain sand) are calcified structures in the pineal gland and other areas of the brain such as the choroid plexus.