38. Which of the following synthesizes antidiuretic hormone?
Answer: C
The hypothalamus synthesizes antidiuretic hormone.
Antidiuretic hormone (ADH), also known as vasopressin, is synthesized in the hypothalamus and plays a crucial role in regulating water balance in the body.
A) Pancreas
The pancreas is primarily involved in the production of digestive enzymes and hormones such as insulin and glucagon. It does not synthesize antidiuretic hormone, making this option incorrect.
B) Thymus
The thymus is responsible for the development of T-cells, which are essential for the immune system. It does not produce antidiuretic hormone, therefore this option is not correct.
C) Hypothalamus
The hypothalamus is the correct choice as it synthesizes antidiuretic hormone, which is then stored and released by the posterior pituitary gland. This hormone is vital for maintaining the body's water balance by regulating urine concentration.
D) Pineal gland
The pineal gland is known for producing melatonin, a hormone that regulates sleep-wake cycles. It does not have a role in synthesizing antidiuretic hormone, making this option incorrect.
Conclusion
The hypothalamus is definitively the correct answer as it is the site of synthesis for antidiuretic hormone, essential for fluid balance in the body. The other options fail because they are associated with different hormonal functions and do not produce ADH. Thus, understanding the role of the hypothalamus is key in this context.