Which of these statements about the thymus gland is false?
a. Develops from the fourth pharyngeal pouch
b. Decreases in size with age
c. Is made up of cells of endodermal origin
d. Descends anterior to the brachiocephalic vein
The Correct option is A
Explanation with High Yield Facts:
The thymus lies within the anterior mediastinum. It develops with the inferior parathyroid gland from the third pharyngeal pouch. The cells of the thymus are of endodermal origin. It is at its largest in childhood and decreases in size with age.
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