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Chemical Coordination and Integration

20 NEET questions on Chemical Coordination and Integration. A sample is shown below with full explanations; the rest are available free after signing up.

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Chemical Coordination and Integration2026medium

Q1.Which of the following statements related to pituitary gland are correct? Choose the correct answer from the options given below:

  • (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.
  • A(a) and (b) only
  • B(a), (b) and (c) onlyAnswer
  • C(c) and (d) only
  • D(b) and (c) only

Explanation

The pituitary is anatomically split into adenohypophysis and neurohypophysis, and the adenohypophysis secretes both FSH and MSH — so (a), (b) and (c) all hold. Statement (d) is false: prolactin is another adenohypophysial hormone, which is what excludes every option containing (d).

Source: NEET 2026 re-exam (21 June), Code 50, Q99

Chemical Coordination and Integration2026medium

Q2.Match List-I with List-II. Choose the correct answer from the options given below:

  • A. Excess growth hormone
  • B. Luteinizing hormone
  • C. Vasopressin
  • D. Oxytocin
  • I. Reabsorption of water and electrolytes in kidney
  • II. Contraction of uterus during child birth
  • III. Acromegaly
  • IV. Ovulation
  • AA-III, B-IV, C-II, D-I
  • BA-III, B-IV, C-I, D-IIAnswer
  • CA-II, B-IV, C-I, D-III
  • DA-IV, B-III, C-I, D-II

Explanation

Excess growth hormone in an adult, after the long bones have fused, thickens the extremities and jaw — acromegaly. LH triggers ovulation. Vasopressin, the antidiuretic hormone, promotes reabsorption of water and electrolytes in the kidney. Oxytocin causes uterine contraction at childbirth.

Source: NEET 2026 re-exam (21 June), Code 50, Q148

Chemical Coordination and Integration2025medium

Q3.Match List-I with List-II and choose the correct answer from the options given below.

  • List-I:
  • A. Heart
  • B. Kidney
  • C. Gastro-intestinal tract
  • D. Adrenal Cortex
  • List-II:
  • I. Erythropoietin
  • II. Aldosterone
  • III. Atrial natriuretic factor
  • IV. Secretin
  • AA-II, B-I, C-III, D-IV
  • BA-IV, B-III, C-II, D-I
  • CA-I, B-III, C-IV, D-II
  • DA-III, B-I, C-IV, D-IIAnswer

Explanation

Atrial natriuretic factor is secreted by the atrial wall of the heart when blood pressure rises, and it lowers pressure. The juxtaglomerular cells of the kidney secrete erythropoietin, which stimulates red blood cell formation. Secretin comes from the gastro-intestinal tract. Aldosterone is a mineralocorticoid from the adrenal cortex. Hence A-III, B-I, C-IV, D-II.

Source: NEET 2025 (4 May), Code 45, Q148

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Questions are reformatted from NEET previous year papers with original explanations and topic tagging. NEET Prep is not affiliated with the NEET examining body.