Question

Which of these organs accumulate and release neurohormones?
A. Posterior pituitary
B. Anterior pituitary
C. Anterior lobe of pituitary
D. Hypothalamus

Answer 1

The word “neurohormones” is related to neurons and hormones, therefore, we need to know which gland secretes the hormones.

Complete Answer:
A. Posterior pituitary: This option of posterior pituitary seems like the answer since certain types of neurohormones are secreted by posterior pituitary. However, they don’t synthesize these hormones. It secretes oxytocin, vasopressin and antidiuretic hormones.

B. Anterior pituitary: This can’t be the answer since we know that anterior pituitary secretes hormones like 1) prolactin (PRL), (2) growth hormone (GH), (3) adrenocorticotropic hormone (ACTH), (4) luteinizing hormone (LH), (5) follicle-stimulating hormone (FSH), and (6) thyroid-stimulating hormone (TSH)

C. Anterior lobe of pituitary: This, too, can’t be the answer since we know that this gland regulates physiological processes.

D. Hypothalamus: This option can probably be the answer taking into consideration that hypothalamus is the master gland which synthesizes the hormones. Major hormones released are dopamine, growth somatostatin, gonadotropin-releasing hormone (GNRH) and thyrotropin-releasing hormone (TRH) etc

Hence the correct answer is Option D.

Note: Hypothalamus is the master gland which inhibits the secretion of hormones from other endocrine glands. Neurohormones are synthesized by hypothalamus but secreted by posterior pituitary.