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Retention of sodium in body depends up on hormone from :-
- a)Adrenal cortex
- b)Adrenal medulla
- c)Parathyroid
- d)Thyroid
Correct answer is option 'A'. Can you explain this answer?
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Retention of sodium in body depends up on hormone from :-a) Adrenal co...
Because adrenal Cortex produces hormone mineralocorticoid which maintain the balance of minerals in body
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Retention of sodium in body depends up on hormone from :-a) Adrenal co...
Retention of Sodium and Its Hormonal Regulation
Sodium retention in the body is primarily regulated by hormones produced in the adrenal cortex. One of the key hormones involved in this process is aldosterone.
Aldosterone and Its Role
- Produced by Adrenal Cortex: Aldosterone is synthesized in the zona glomerulosa of the adrenal cortex.
- Function: It promotes sodium reabsorption in the kidneys, specifically in the distal convoluted tubule and collecting ducts. This reabsorption increases sodium levels in the bloodstream.
Mechanism of Action
- Sodium-Potassium Pump: Aldosterone stimulates the activity of sodium-potassium pumps, enhancing the reabsorption of sodium while promoting the excretion of potassium.
- Water Retention: Increased sodium reabsorption leads to water retention due to osmotic balance, contributing to blood volume and blood pressure regulation.
Other Hormones and Their Influence
- Adrenal Medulla: Although hormones like adrenaline (produced by the adrenal medulla) affect overall metabolism and stress responses, they do not play a direct role in sodium retention.
- Parathyroid and Thyroid Hormones: Parathyroid hormone primarily regulates calcium levels, while thyroid hormones influence metabolic rate and growth but are not directly involved in sodium retention.
Conclusion
The primary hormone responsible for sodium retention is aldosterone, secreted by the adrenal cortex. Its action on the kidneys ensures that sodium levels in the body are maintained, which is critical for fluid balance, blood pressure regulation, and overall homeostasis.
Sodium retention in the body is primarily regulated by hormones produced in the adrenal cortex. One of the key hormones involved in this process is aldosterone.
Aldosterone and Its Role
- Produced by Adrenal Cortex: Aldosterone is synthesized in the zona glomerulosa of the adrenal cortex.
- Function: It promotes sodium reabsorption in the kidneys, specifically in the distal convoluted tubule and collecting ducts. This reabsorption increases sodium levels in the bloodstream.
Mechanism of Action
- Sodium-Potassium Pump: Aldosterone stimulates the activity of sodium-potassium pumps, enhancing the reabsorption of sodium while promoting the excretion of potassium.
- Water Retention: Increased sodium reabsorption leads to water retention due to osmotic balance, contributing to blood volume and blood pressure regulation.
Other Hormones and Their Influence
- Adrenal Medulla: Although hormones like adrenaline (produced by the adrenal medulla) affect overall metabolism and stress responses, they do not play a direct role in sodium retention.
- Parathyroid and Thyroid Hormones: Parathyroid hormone primarily regulates calcium levels, while thyroid hormones influence metabolic rate and growth but are not directly involved in sodium retention.
Conclusion
The primary hormone responsible for sodium retention is aldosterone, secreted by the adrenal cortex. Its action on the kidneys ensures that sodium levels in the body are maintained, which is critical for fluid balance, blood pressure regulation, and overall homeostasis.
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Retention of sodium in body depends up on hormone from :-a) Adrenal cortexb) Adrenal medullac) Parathyroidd) ThyroidCorrect answer is option 'A'. Can you explain this answer?
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