Pituitary and Thyroid Function
- Previous year questions on Pituitary and Thyroid Function for NEET PG (National Eligibility cum Entrance Test - Postgraduate), from the Physiology section of the exam.
- Most questions here come from previous-year papers of Indian postgraduate medical entrance and licensing exams; where a paper and year are recorded the question carries them. The image-based questions are original vignettes written around an openly licensed figure, and were never asked in any exam.
- 24 live questions in Pituitary and Thyroid Function.
- 10 of 24 questions carry a verified exam year: 2018, 2019, 2020.
- Physiology is worth about 17 of 300 questions on the exam. See every subject’s weightage.
- Question set last updated 27 Aug 2026.
Q1.What is the best stimulus for release of vasopressin
- AHypotonicity of extracellular fluid
- BHypertension
- CHypotension✓ Correct answer
- DHypo-osmolality of extracellular fluid
Q2.The level of which one of the following hormones is likely to increase after hypothalamic ablation?
- AGrowth hormone
- BProlactin✓ Correct answer
- CFSH
- DACTH
Q3.Secretion of prolactin is inhibited by:
- ADopamine✓ Correct answer
- BNor-adrenaline
- CAdrenaline
- DSerotonin
Q4.Serum prolactin levels are highest
- AREM sleep
- B24 hrs after parturition✓ Correct answer
- C1 hr after running
- DWhen Estrogens are high
Q5.What is the t1/2 of T4?
- A3-4 days
- B5-6 days
- C6-7 days✓ Correct answer
- D7-8 days
Q6.All are metabolic effects of growth hormone Except
- AReduced ability of insulin to stimulate glucose uptake
- BIncreased glucose uptake✓ Correct answer
- CIncreased plasma glucose
- DIncreased plasma free fatty acids
Q7.Prolactin levels are highest in which of the following?
- AAfter 24 hrs of ovulation
- BAfter 24 hrs of parturition
- CAfter nipple stimulation
- DJust before parturition✓ Correct answer
Q8.Disruption of the hypothalamic pituitary portal system will lead to
- AHigh circulating levels of PRL, low levels of LH and FSH, and ovarian atrophy✓ Correct answer
- BEnhanced follicular development as a result of increased circulating levels of PRL
- COvulation, followed by increased circulating levels of progesterone
- DA reduction of ovarian inhibin levels, followed by increased circulating FSH
Q9.Thyroxine is transported by?
- AAlbumin
- BTransthyretin✓ Correct answer
- CTransferrin
- DCeruloplasmin
Q10.Which of the following iodinated compound is present in a maximum concentration in the thyroid?
- AMonoiodotyrosine (MIT)
- BDiiodotyrosine (DIT)✓ Correct answer
- CT3
- DReverse T3
Answer key
Q1: C. Hypotension; Q2: B. Prolactin; Q3: A. Dopamine; Q4: B. 24 hrs after parturition; Q5: C. 6-7 days; Q6: B. Increased glucose uptake; Q7: D. Just before parturition; Q8: A. High circulating levels of PRL, low levels of LH and FSH, and ovarian atrophy; Q9: B. Transthyretin; Q10: B. Diiodotyrosine (DIT).
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