Question

‘Brain sand' is found in
(a) Thyroid
(b) Thymus
(c) Pineal body
(d) All of the above

Answer 1

Hint: Brain sand or Corpora arenacea have calcified structures and have an unknown function. the concentration of brains and is directly proportional to the age as it increases with the increase in age. It is composed of calcium carbonate, calcium phosphate, ammonium phosphate, and magnesium phosphate.

Complete answer:
Brain sand is found in the pineal body. It is present in the other areas of the brain such as choroid plexus. The older person has the highest amount of brain sand. The pineal gland becomes increasingly visible on the X-rays with the time by the third or fourth decade. In a radiological examination, it is often used. the mind and brain are two different entities according to the French philosopher. It interacts with the help of the pineal gland. This is because of the location of the pineal gland which is on the midline of the brain.

Additional information:
Thyroid: Thyroid is an endocrine gland present in the neck consisting of two lobes connected. The two-thirds part of the loaves is connected by the thyroid Isthmus which is a thin band of tissues. The thyroid is located at Adam’s Apple which is present in front of the neck. It secretes some hormones such as triiodothyronine, thyroxine, and peptide hormone. It influences Protein synthesis and metabolic rate. The thyroid gland helps with growth and development in children.

Thymus: Thymus is the lymphoid organ presented in our immune system. It is located in the front upper part of the chest behind the sternum in the superior mediastinum and front of the heart. It has two lobes each of which consists of the Central medulla and the outer cortex which is surrounded by a capsule. It facilitates the maturation of T cells and provides cell-mediated immunity. It ensures that the cells react against antigens.
So, the correct answer is ‘(c) Pineal body,'.

Note: The thyroid gland can weigh up to 20-60 grams and is 2 inches wide. The thymus gland is activated until puberty in human beings. The thymosin hormone of the thymus helps in stimulating the development of disease-fighting T cells. The sleep cycle i.e. the time of waking and the time of sleeping is controlled by our pineal gland.