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C3.1.13—Hypothalamus and pituitary control

Hypothalamus and pituitary control links named stimuli, coordinating structures and effectors so body systems or plant tissues produce an integrated biological response.

Syllabus
First assessment 2025
Objective
C3.1.13
Level
HL

Exam analysis

Chance of appearing9%of analysed past papers
Latest appearanceNovember 2024
Most common paperPaper3
Typical marks1–2

Common command terms

  • Suggest
  • Describe
  • State
  • Identify
  • Label
  • Explain
  • Outline

Scoring notes

Common mistake
Confusing releasing hormones from the hypothalamus with hormones secreted by the pituitary.

Recent exam appearances

November 2024Paper3 ["HL"] · TZ023[ 6 ]C3.1.13—Hypothalamus and pituitary control
May 2024Paper2 ["HL"] · TZ27(c)[ 7 ]C3.1.13—Hypothalamus and pituitary control
May 2024Paper3 ["HL"] · TZ124[ 2 ]C3.1.13—Hypothalamus and pituitary control
November 2023Paper3 ["HL"] · TZ223(c)[ 1 ]C3.1.13—Hypothalamus and pituitary control
November 2023Paper3 ["HL"] · TZ123(c)[ 1 ]C3.1.13—Hypothalamus and pituitary control
Practice this objective

Coverage 2015–2024 · Updated 16 Jul 2026

Concept essentials

  • Hypothalamus and pituitary control depends on linking the stimulus to the coordinating structure or signal.
  • The pathway for hypothalamus and pituitary control must keep information flow and response direction clear.
  • Named tissues, hormones, neurons or effectors give hypothalamus and pituitary control its biological specificity.
  • Evidence about hypothalamus and pituitary control is strongest when structure, mechanism and outcome are connected.
ConceptIB Biology HL