System Fundamentals
"The heart is the only organ that works 24/7 without rest. Understanding its mechanics is the foundation of acute nursing care."
The GI tract is a 9-meter tube from mouth to anus responsible for digestion, absorption, and elimination. Accessory organs — liver, gallbladder, and pancreas — provide enzymes, bile, and metabolic support. The enteric nervous system (the "second brain") regulates GI function independently.
Key Concept
Perfusion: The continuous passage of blood through capillaries to tissue.
Nursing Alert
Inadequate cardiac output leads to rapid organ failure.
Module Progress
Readiness Score64%
Learning Aids
- ECG Interpretation Guide
- Cardiac Cycle Animation
- Clinical Murmur Library