NEET PG DENTAL EXAM

EMBRYOLOGY

PHARYNGEAL ARCHES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Superior parathyroid gland develop from which endodermal pouch?
A
1st
B
2nd
C
3rd
D
4th
Explanation: 

Detailed explanation-1: -Embryologically, the parathyroid glands derive from the endoderm of the third and fourth pharyngeal pouches. The third pharyngeal pouch gives rise to the inferior parathyroid glands, while the superior parathyroids arise from the fourth pharyngeal pouch.

Detailed explanation-2: -Four small masses of epithelial tissue are embedded in the connective tissue capsule on the posterior surface of the thyroid glands. These are parathyroid glands, and they secrete parathyroid hormone or parathormone. Parathyroid hormone is the most important regulator of blood calcium levels.

Detailed explanation-3: -The parathyroid glands are small pea-sized glands located in the neck just behind the butterfly-shaped thyroid gland. Most people have four parathyroid glands, with two parathyroid glands lying behind each ‘wing’ of the thyroid gland.

There is 1 question to complete.