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Preksha Dhyana :
has a greyish yellow colour. It increases in size until about 30th year, and in the adult male weighs about 600 mgs. (slightly more in women). No part of the body is exempt from its influence. Thyroid Gland
This gland consists of two maroon-coloured masses astride the upper end of the trachea, close to the larynx. The two parts are connected with a narrow strip of the same tissue just below the Adam's apple. Each lobe is about 5 cms. in length, 3 cms. in width and about 2 mms. thick. The normal thyroid of an adult weighs 25 to 40 gms. but its size fluctuates with age, habitation and diet. It is heavier in the female than in the male and becomes enlarged during sex-excitement, menstruation and pregnancy. The vascular supply to this gland is exceptionally rich, e.g. it receives four times as much blood as do the kidneys. The Parathyroid Glands
They are four minute yellowish brown ovoid bodies about 6 mms. long and 3 mms. wide, embedded in the lobes of the thyroid gland (two in each lobe). Sometimes the lower two are found much farther down and in the chest.
The Thymus Gland
This gland is the source of one or more hormone-like factors. A lymphoid-two lobed structure-this gland is situated in the chest between the two lungs and extends up into the neck A brownish mass-it reaches its largest size at the beginning of puberty, when it is about 5 cms. long, 3.5 cms. wide and 6 mms. thick. The Adrenal Glands
They are a pair of three-cornered hat-shaped glands capping the upper end of the kidneys. Each adrenal is a double gland, composed of a cortex-an outer layer and a medulla-an inner layer. The cortex makes up the bulk of the gland, which is bright yellow outside and reddish brown
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