Heart and Cardiac Valves
Source: William Harvey, De Motu Cordis, 1628; Otto Frank, 1895; Ernest Starling, 1914 Institution: Multiple
Finding
The mammalian heart contains four valves that enforce unidirectional blood flow. They are passive mechanical structures: open under pressure gradients, closed when flow attempts to reverse. Papillary muscles and chordae tendineae prevent valve inversion. When valves fail (regurgitation), blood flows backward and the system degrades through compensatory enlargement leading to heart failure. The Frank-Starling mechanism matches cardiac output to venous return: the heart pumps exactly as much as it receives, no more.
Pattern Mapping
Honesty — The valves enforce a structural constraint where blood can only flow in the direction it claims to flow. Regurgitation is literally the failure of this honesty. There is no ambiguity: forward or closed.
Alignment — The heart’s stated function (circulating oxygenated blood) and its actual mechanism (unidirectional pumping) are consistent at every level.
Proportion — Cardiac output adjusts to metabolic demand through Frank-Starling. The heart pumps exactly as much as venous return provides. Overcompensation (pathological hypertrophy) is the disease, not the function.
Connections
- Blood-Brain Barrier — both are boundary structures that enforce one-way authority (→ Meta-Pattern 09 - Feedback and Homeostasis)
- Kidney and Nephron Filtration — Frank-Starling and tubuloglomerular feedback are both negative feedback mechanisms maintaining homeostasis
- Predictive Coding and Free Energy Principle — prediction error in the brain parallels pressure-gradient sensing in valves: both correct misalignment
- Wound Healing — cardiac valve failure triggers compensatory remodeling, paralleling the four phases of wound repair
- Cognitive Dissonance — dissonance is felt misalignment; valve regurgitation is physical misalignment — both produce degradation when uncorrected
Status
Textbook anatomy and physiology (Guyton & Hall, 14th ed.). Frank-Starling law established 1895/1914. No controversy.
The mapping to the five properties is this project’s structural interpretation.