PATHOLOGY

PATHOLOGY MCQ

ENDOCRINE SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The hormone, oxytocin, is produced by the ____, but it is stored in the posterior lobe of the pituitary gland.
A
thyroid gland
B
hypothalamus
C
adrenal gland
D
thalamus
Explanation: 

Detailed explanation-1: -The main role of the posterior pituitary is to store and releases two hormones: oxytocin and antidiuretic hormone (ADH, or vasopressin). Both of the lobes of your pituitary gland are connected to your hypothalamus (a part of your brain) through a stalk that contains blood vessels and nerve cells.

Detailed explanation-2: -What is oxytocin? Oxytocin is produced in the hypothalamus and is secreted into the bloodstream by the posterior pituitary gland. Secretion depends on electrical activity of neurons in the hypothalamus – it is released into the blood when these cells are excited.

Detailed explanation-3: -Also called the neural lobe or posterior lobe, this region constitutes the majority of the posterior pituitary and is the storage site of oxytocin and vasopressin.

Detailed explanation-4: -Two hormones are produced by the hypothalamus and then stored in the posterior pituitary gland before being secreted into the bloodstream. These are: Anti-diuretic hormone (also called vasopressin), which controls water balance and blood pressure.

Detailed explanation-5: -The two hormones produced by the posterior pituitary gland are oxytocin and vasopressin, also known as antidiuretic hormone. The purposes of oxytocin include facilitating uterine contractions during labor, allowing for milk let down during breastfeeding, promoting social bonding, and moderating testosterone levels.

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