Question

Which is NOT true of the endocrine system?

A.) ultimobranchial bodies and parathyroid gland have antagonistic effects

B.) adrenal gland is paired and has two layers in all vertebrates

C.) the thyroid produces permissive hormones

D.) endocrine organs are dispersed throughout the body, they have differing developmental origins, and they produce a wide array of hormones

Answer 1

Answer : A.) ultimobranchial bodies and parathyroid gland have antagonistic effects.

Explanation : Parathyroid Gland are Located on the posterior medial surface of the thyroid gland.

parathyroid gland produce Parathyroid hormone in the body that Stimulate the breakdown of bone to release calcium into the blood and excess release may cause hypercalcemica .
They also Enhance Reabsorption of calcium by the kidneys.
They also Increase calcium absorption by intestine.

ultimobranchial bodies Is the primitive structure and does not antagonist to PTH...