Question

Which endocrine gland stores its secretion in extracellular spaces before discharging into blood?

• A. Testis
• B. Pancreas
• C. Thyroid
• D. Adrenal

Answer 1

The correct option is C Thyroid

A. Testes are the primary sex organs in males and secrete testosterone hormone that stimulates the development of secondary sexual characteristics and spermatogenesis.

B. Pancreas is a heterocrine gland as it acts both as endocrine and exocrine gland. It secretes insulin hormone into blood and act as endocrine gland and when it secretes digestive enzymes and juice through pancreatic duct, it acts as exocrine gland.

C. Thyroid gland is situated between the trachea and larynx in the neck and secretes thyroxine hormone which increases oxygen consumption by metabolically active tissues. This gland stores thyroxine in extracellular spaces before discharging into blood.

D. Adrenal gland is present on upper side of kidneys and has two parts, adrenal cortex which secrete glucocorticoids, mineralocorticoids and sexocorticoids and adrenal medulla which secrete adrenaline and nor-adrenaline hormone.

So, the correct answer is 'Thyroid'.