System Fundamentals
"The heart is the only organ that works 24/7 without rest. Understanding its mechanics is the foundation of acute nursing care."
Blood is the body's transportation and defense medium. The hematologic system produces and regulates formed elements through hematopoiesis, while the immune system deploys innate and adaptive defenses. These systems share the bone marrow as their origin and work in concert to maintain homeostasis and respond to pathogens.
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