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Diabetes insipidus occurs due to the hyp...

Diabetes insipidus occurs due to the hyposecretion of

A

thymosine

B

oxytocin

C

growth

D

vasopressin

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Diabetes Insipidus**: Diabetes insipidus is a condition characterized by excessive thirst and the excretion of large amounts of diluted urine. It is important to identify the underlying cause of this condition. 2. **Identifying the Hormones**: The question provides four hormone options: thymosine, oxytocin, growth hormone, and vasopressin. We need to determine which hormone is related to the regulation of water balance in the body. 3. **Role of Vasopressin (ADH)**: Vasopressin, also known as antidiuretic hormone (ADH), is produced by the hypothalamus and released by the posterior pituitary gland. Its primary function is to promote water reabsorption in the kidneys, specifically in the distal convoluted tubules and collecting ducts. 4. **Effects of Vasopressin Hyposecretion**: If there is hyposecretion (low levels) of vasopressin, the kidneys will not reabsorb sufficient water. This leads to the production of large volumes of dilute urine, which is the hallmark of diabetes insipidus. 5. **Conclusion**: Based on the role of vasopressin in water reabsorption and the effects of its hyposecretion, we conclude that diabetes insipidus occurs due to the hyposecretion of vasopressin. **Final Answer**: Diabetes insipidus occurs due to the hyposecretion of **vasopressin** (option 4). ---
**Step-by-Step Solution:** 1. **Understanding Diabetes Insipidus**: Diabetes insipidus is a condition characterized by excessive thirst and the excretion of large amounts of diluted urine. It is important to identify the underlying cause of this condition. 2. **Identifying the Hormones**: The question provides four hormone options: thymosine, oxytocin, growth hormone, and vasopressin. We need to determine which hormone is related to the regulation of water balance in the body. 3. **Role of Vasopressin (ADH)**: Vasopressin, also known as antidiuretic hormone (ADH), is produced by the hypothalamus and released by the posterior pituitary gland. Its primary function is to promote water reabsorption in the kidneys, specifically in the distal convoluted tubules and collecting ducts. ...
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