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Human Body Study

Changelog

Notable, reader-facing changes to the Human Body Study knowledge base, newest first.

May 2026

  • Deepened the reproductive system into its individual organs — testes, duct system, accessory glands, and penis on the male side; ovaries, fallopian tubes, uterus, cervix and vagina, and mammary glands on the female side — each with its own schematic.
  • Added pages for the specialized sebaceous glands — Meibomian glands, glands of Zeis, Montgomery’s tubercles, and Fordyce spots.
  • Added a Pilosebaceous Unit page — the integrative anatomical unit of hair, sebaceous gland, and arrector pili muscle that organizes most of the skin’s surface.
  • Enriched the Sebaceous Glands page with density numbers, sapienic acid, the acid mantle, and vernix caseosa.
  • Added interactive diagrams for all twelve hormonal axes — each axis page now opens with a signal-flow schematic showing the gland chain, hormones, and feedback loops, with every node clickable to its detail page. The hormonal-axes index page carries a hub-and-spoke overview map of the whole landscape.
  • Added a Tendons page under the muscular system — the missing partner to ligaments, distinguishing muscle-to-bone tendons from bone-to-bone ligaments.
  • Added interactive schematics for all eleven organ systems — each system overview now carries a labelled illustration whose callouts double as navigation between its subsystem pages, completing the pattern started with cells and tissues.
  • Added an interactive cell schematic — a labelled illustration of a generalized animal cell whose callouts double as navigation between the nine organelle pages.
  • Added an interactive tissue schematic — the four tissue types layered into a generalized organ wall, with callouts that double as navigation between the four tissue-type pages.
  • Added the Regulation section — how the body holds itself steady through homeostasis and feedback loops.
  • Expanded the inventory with in-depth pages on the organs of the cardiovascular, digestive, endocrine, lymphatic, reproductive, respiratory, and urinary systems, and on the stages of prenatal development.
  • Knowledge base launched, covering the foundations of the body, the eleven organ systems, and the human lifespan.