MBBS · Physiology

Endocrine feedback

Endocrine systems use circulating hormones and receptor-mediated responses to coordinate metabolism, growth, reproduction and stress adaptation.

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Endocrine feedback — learning map

Original conceptual SVG · scalable
LABELED RELATIONSHIP MAP · SCHEMATIC, NOT TO SCALESignal productionspecialized tissueAxis organizationhypothalamus–pituitary–targetNegative feedbacktarget hormone controlPulsatility and bindingmeasure with contextEndocrine feedbackKEY RELATIONSHIPS

Original schematic relationship map for this topic; relationships are organized for study, not intended as an anatomical depiction or a diagnostic algorithm.

Concept 01

Signal production

Endocrine cells secrete hormones into circulation; local concentration, receptor expression and clearance determine response.

Concept 02

Axis organization

Hypothalamic releasing signals can regulate pituitary trophic hormones, which stimulate peripheral glands.

Concept 03

Negative feedback

Peripheral hormones commonly inhibit hypothalamic and pituitary output, stabilizing the axis around physiological requirements.

Concept 04

Pulsatility and binding

Circadian rhythms, binding proteins, pregnancy, drugs and illness affect circulating hormone results and how they are interpreted.

Education / safety note: Do not interpret a single hormone value without timing, assay reference range, symptoms and relevant feedback relationships.

Reference and next reading

Explore the original curriculum and publisher-hosted resources for full-depth reading; this note is an original schematic introduction, not an exhaustive chapter.

Official / publisher source: NMC official CBME Curriculum 2024 and current regulations index ↗Official / publisher source: NCBI Bookshelf ↗Official / publisher source: PubMed ↗