Chemical Coordination and Integration NEET PYQs (2005–2026) with Solutions

10 solved Chemical Coordination and Integration PYQs

Real NEET and AIPMT questions from this chapter, newest first. Try each one, then open the answer and the step-by-step explanation.

1. Question 1 (NEET 2026)

   NEET 2026EasyPituitary gland and its hormones

   Which of the following statements related to pituitary gland are correct? (a) It is divided anatomically into adenohypophysis and neurohypophysis (b) It secretes follicle stimulating hormone (c) It secretes melanocyte stimulating hormone (d) It does not secrete prolactin Choose the correct answer from the options given below :

   1. AOption A: (a) and (b) only
   2. BOption B: (a), (b) and (c) only
   3. COption C: (c) and (d) only
   4. DOption D: (b) and (c) only

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   Correct answer: (B) (a), (b) and (c) only

   Explanation

   (a) True: the pituitary gland is divided anatomically into an adenohypophysis and a neurohypophysis. (b) True: the pars distalis of the adenohypophysis secretes FSH (along with GH, PRL, TSH, ACTH and LH). (c) True: the pars intermedia secretes melanocyte stimulating hormone (MSH). (d) False: prolactin (PRL) is secreted by the pars distalis of the pituitary. So (a), (b) and (c) are correct, which is option (B).

2. Question 2 (NEET 2026)

   NEET 2026EasyIslets of Langerhans: insulin and glucagon

   Which one of the following statements is incorrect?

   1. AOption A: $\alpha$-cells of pancreas secrete glucagon
   2. BOption B: $\alpha$-cells of pancreas secrete insulin
   3. COption C: Glucagon stimulates glycogenolysis
   4. DOption D: $\beta$-cells of pancreas secrete insulin

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   Correct answer: (B) $\alpha$-cells of pancreas secrete insulin

   Explanation

   The islets of Langerhans of the pancreas have two main types of cells: $\alpha$-cells, which secrete glucagon, and $\beta$-cells, which secrete insulin. So (A) and (D) are correct. Glucagon is a hyperglycaemic hormone that acts on liver cells and stimulates glycogenolysis (breakdown of glycogen), raising blood glucose, so (C) is correct. Insulin is secreted by $\beta$-cells, not $\alpha$-cells. Hence the incorrect statement is option (B).

3. Question 3 (NEET 2026)

   NEET 2026MediumHormones

   Match List I with List II: Choose the correct answer from the options given below:

   1. AOption A: A-III, B-II, C-IV, D-I
   2. BOption B: A-IV, B-II, C-I, D-III
   3. COption C: A-II, B-III, C-IV, D-I
   4. DOption D: A-II, B-III, C-I, D-IV

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   Correct answer: (C) A-II, B-III, C-IV, D-I

   Explanation

   Cortisol has anti-inflammatory effects. Aldosterone promotes Na⁺ and water reabsorption. Cholecystokinin stimulates pancreatic enzyme secretion and bile release. Progesterone promotes alveolar development in mammary glands.

4. Question 4 (NEET 2026)

   NEET 2026EasyPituitary hormones and their functions

   Match List-I with List-II. List-I: (A) Excess growth hormone (B) Luteinizing hormone (C) Vasopressin (D) Oxytocin List-II: (I) Reabsorption of water and electrolytes in kidney (II) Contraction of uterus during child birth (III) Acromegaly (IV) Ovulation Choose the correct answer from the options given below:

   1. AOption A: A-III, B-IV, C-II, D-I
   2. BOption B: A-III, B-IV, C-I, D-II
   3. COption C: A-II, B-IV, C-I, D-III
   4. DOption D: A-IV, B-III, C-I, D-II

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   Correct answer: (B) A-III, B-IV, C-I, D-II

   Explanation

   (A) Excess secretion of growth hormone in adults, especially in middle age, results in severe disfigurement called acromegaly → (III). (B) In females, LH induces ovulation of fully mature (Graafian) follicles and maintains the corpus luteum → (IV). (C) Vasopressin (ADH) acts mainly at the kidney and stimulates reabsorption of water and electrolytes by the distal tubules, reducing water loss through urine → (I). (D) Oxytocin stimulates vigorous contraction of the uterus at the time of child birth and milk ejection from the mammary gland → (II). So A-III, B-IV, C-I, D-II, option (B).

5. Question 5 (NEET 2025)

   NEET 2025MediumHormones

   Match List - I with List - II. Choose the correct answer from the options given below :

   1. AOption A: A-II, B-I, C-II, D-IV
   2. BOption B: A-IV, B-III, C-II, D-I
   3. COption C: A-I, B-III, C-IV, D-II
   4. DOption D: A-III, B-I, C-IV, D-II

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   Correct answer: (D) A-III, B-I, C-IV, D-II

   Explanation

   Heart secretes atrial natriuretic factor, kidney secretes erythropoietin, gastro-intestinal tract secretes secretin, and adrenal cortex secretes aldosterone.

6. Question 6 (NEET 2025)

   NEET 2025MediumHuman Endocrine System

   Consider the following statements regarding function of adrenal medullary hormones : A. It causes pulmonary constriction B. It is a hyperglycemic hormone C. It causes piloerection D. It increases strength of heart contraction Choose the correct answer from the options given below :

   1. AOption A: C and D Only
   2. BOption B: B, C and D Only
   3. COption C: A, C and D Only
   4. DOption D: D Only

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   Correct answer: (B) B, C and D Only

   Explanation

   Adrenal medullary hormones (adrenaline and noradrenaline) are hyperglycemic hormones, cause piloerection, and increase the strength of heart contraction. They do not cause pulmonary constriction.

7. Question 7 (NEET 2025)

   NEET 2025MediumHuman Endocrine System

   Which of the following hormones released from the pituitary is actually synthesized in the hypothalamus?

   1. AOption A: Luteinizing hormone (LH)
   2. BOption B: Anti-diuretic hormone (ADH)
   3. COption C: Follicle-stimulating hormone (FSH)
   4. DOption D: Adenocorticotropic hormone (ACTH)

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   Correct answer: (B) Anti-diuretic hormone (ADH)

   Explanation

   ADH is synthesized in the hypothalamus and stored and released from the posterior pituitary gland.

8. Question 8 (NEET 2025)

   NEET 2025MediumHuman Endocrine System

   Match List - I with List - II. Choose the correct answer from the options given below:

   1. AOption A: A-IV, B-II, C-I, D-III
   2. BOption B: A-IV, B-II, C-III, D-I
   3. COption C: A-II, B-IV, C-I, D-III
   4. DOption D: A-III, B-II, C-IV, D-I

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   Correct answer: (A) A-IV, B-II, C-I, D-III

   Explanation

   Progesterone is secreted by corpus luteum, relaxin by ovary, melanocyte stimulating hormone by pars intermedia, and catecholamines by adrenal medulla.

9. Question 9 (NEET 2024)

   NEET 2024MediumEndocrine Disorders

   Match List I with List II : Choose the correct answer from the options given below :

   1. AOption A: A-III, B-IV, C-II, D-I
   2. BOption B: A-III, B-IV, C-I, D-II
   3. COption C: A-I, B-III, C-II, D-IV
   4. DOption D: A-IV, B-II, C-I, D-III

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   Correct answer: (B) A-III, B-IV, C-I, D-II

   Explanation

   Exophthalmic goiter is caused by hypersecretion of thyroid hormone and protruding eyeballs. Acromegaly results from excessive secretion of growth hormone. Cushing’s syndrome is caused by excess cortisol secretion leading to moon face and hyperglycemia. Cretinism is due to hyposecretion of thyroid hormone causing stunted growth. Therefore, the correct matching is A-III, B-IV, C-I, D-II.

10. Question 10 (NEET 2023)

    NEET 2023MediumEndocrine Glands

    Which of the following are NOT under the control of thyroid hormone? A. Maintenance of water and electrolyte balance B. Regulation of basal metabolic rate C. Normal rhythm of sleep-wake cycle D. Development of immune system E. Support the process of R.B.Cs formation Choose the correct answer from the options given below:

    1. AOption A: A and D only
    2. BOption B: B and C only
    3. COption C: C and D only
    4. DOption D: D and E only

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    Correct answer: (C) C and D only

    Explanation

    Thyroid hormones regulate basal metabolic rate and support RBC formation. Sleep-wake rhythm is mainly controlled by melatonin, while immune system development is associated with thymus hormones.