Question

Which endocrine gland stores its secretion in extracellular spaces before discharging it into blood?
A. Testis
B. Pancreas
C. Thyroid
D. Adrenal

Answer 1

Hint: The gland that stores thyroxine in extracellular spaces before releasing it into the bloodstream is located in the neck between the trachea and the larynx and secretes the thyroxine hormone, which causes metabolically active tissues to consume more oxygen

Complete Step by Step Answer:
The endocrine system glands are distributed throughout the body. They secrete various hormones that regulate the metabolism and function of other cells. Exocrine glands, on the other hand, secrete substances both inside and outside the body via ducts. These two modes of transport distinguish exocrine from endocrine glands.

In males, the testes are the primary sex organs that secrete testosterone hormone, which promotes the development of secondary sexual characteristics and spermatogenesis.
The pancreas is a heterocrine gland because it functions as both an endocrine and an exocrine gland. It acts as an endocrine gland when it secretes insulin hormone into the blood, and as an exocrine gland when it secretes digestive enzymes and juice through the pancreatic duct.

The hormone is stored extracellularly in a pool accompanied by the thyroid gland's epithelial gland cells (a follicle). In this case, the hormone is released into the bloodstream via reabsorption and transferred from the cells of origin into the extracellular space, where it enters the capillaries.

The correct option is C.

Note: The adrenal gland is on the kidneys' upper side and is divided into two sections: the adrenal cortex, which secretes glucocorticoids, mineralocorticoids, and sex corticoids, and adrenaline and the nor-adrenaline hormone is secreted by the adrenal medulla.