NEET 2023 Zoology Endocrine System Match the Following Question

To solve the matching question between List I (hormones) and List II (organs), we need to understand the primary functions and the sites of action of each hormone mentioned in List I. Here’s a detailed breakdown:

List I Hormones and Their Functions

1. CCK (Cholecystokinin):

   • Function: CCK is primarily involved in digestion; it stimulates the gallbladder to release bile and the pancreas to secrete digestive enzymes.
   • Site of Action: Pancreas and Gastric Gland. CCK stimulates enzyme secretion from the pancreas and promotes bile release, but it is more directly associated with the pancreatic function.

2. GIP (Gastric Inhibitory Peptide):

   • Function: GIP is an incretin hormone that inhibits gastric motility and stimulates insulin secretion from the pancreas in response to meals containing carbohydrates and fats.
   • Site of Action: Pancreas. Although it affects gastric function, its primary action is on the pancreas.

3. ANF (Atrial Natriuretic Factor):

   • Function: ANF helps to regulate blood pressure and fluid balance by promoting natriuresis (excretion of sodium through urine) and inhibiting renin release.
   • Site of Action: Heart. ANF is produced by the heart (specifically the atria) and acts on the kidneys and blood vessels.

4. ADH (Antidiuretic Hormone):

   • Function: ADH regulates water balance in the body by promoting water reabsorption in the kidneys.
   • Site of Action: Kidney. ADH acts mainly on the kidneys to promote water retention.

Matching the Hormones with Their Functions

Now, let’s match each hormone in List I with the corresponding site of action in List II:

• A. CCK (Cholecystokinin) → IV. Pancreas (stimulates enzyme secretion)
• B. GIP (Gastric Inhibitory Peptide) → II. Heart (however, it primarily acts on the pancreas for insulin secretion)
• C. ANF (Atrial Natriuretic Factor) → III. Gastric gland (but primarily originates from the heart)
• D. ADH (Antidiuretic Hormone) → I. Kidney (promotes water reabsorption)

Evaluating Provided Options

Now, checking the provided options against our matches above:

• Option A: A-III, B-II, C-IV, D-I

  • Incorrect: CCK should match with IV (Pancreas), not III (Gastric gland).
  • GIP should match with IV (Pancreas), not II (Heart).

• Option B: A-II, B-IV, C-I, D-III

  • Incorrect: All matches in this option are incorrect based on the functions established.

• Option C: A-IV, B-II, C-III, D-I

  • Incorrect: GIP does not match with II (Heart), and ANF does not match with III (Gastric gland).

• Option D: A-IV, B-III, C-II, D-I

  • Incorrect: CCK should match with IV (Pancreas), and ANF should match with II (Heart).

Conclusion

The correct answer must be revised because of the mismatches. Given the functions and sites of action, it seems that the original assertion of Option D being correct does not hold up to scrutiny as well.

Thus, the best matches for the hormones to their respective organs based on physiological functions are indeed represented in Option A:

• A-III (incorrect) - should be A-IV
• B-II (incorrect) - should be B-IV
• C-IV (incorrect) - should be C-II
• D-I (correct)

Hence, the correct matching should actually reflect that none of the options provided are entirely accurate, as they don't align with physiological knowledge.

In summary, the best choice based on hormone function and action is as follows:

• A (CCK) - IV (Pancreas)
• B (GIP) - IV (Pancreas)
• C (ANF) - II (Heart)
• D (ADH) - I (Kidney)

This leads us to conclude that the correct matches are not fully represented in the options provided. The reasoning surrounding each hormone’s function and action site is crucial for understanding their physiological roles.