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Smooth muscles of arterioles undergo con...

Smooth muscles of arterioles undergo contraction under the influence of
(a) ADH
(b) ACTH
(c) FSH
(d) PRL

A

ADH

B

ACTH

C

FSH

D

PRL

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding which hormone causes the contraction of smooth muscles in arterioles, we will analyze each option provided: 1. **Understanding the Question**: The question asks which hormone influences the contraction of smooth muscles in arterioles. 2. **Analyzing Each Option**: - **(a) ADH (Anti-Diuretic Hormone)**: This hormone is also known as vasopressin. It is produced by the posterior pituitary gland and has a significant role in regulating water balance in the body. Importantly, ADH also causes contraction of smooth muscles in arterioles, leading to an increase in arterial blood pressure. Therefore, this option is likely correct. - **(b) ACTH (Adrenocorticotropic Hormone)**: This hormone is produced by the anterior pituitary gland and primarily stimulates the adrenal cortex to release cortisol. It does not have a direct role in the contraction of smooth muscles in arterioles. Hence, this option is incorrect. - **(c) FSH (Follicle Stimulating Hormone)**: This hormone is involved in the reproductive processes, stimulating the growth of ovarian follicles in females and spermatogenesis in males. It does not influence the contraction of smooth muscles in arterioles, making this option incorrect. - **(d) PRL (Prolactin)**: Prolactin is primarily involved in lactation and the development of mammary glands. It does not have a role in the contraction of smooth muscles in arterioles, so this option is also incorrect. 3. **Conclusion**: After analyzing all the options, it is clear that the correct answer is **(a) ADH**. This hormone is responsible for the contraction of smooth muscles in arterioles. ### Final Answer: The smooth muscles of arterioles undergo contraction under the influence of **(a) ADH**.
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