Pulmonary hypertension is a rare lung disorder in which the arteries that carry blood from the heart to the lungs become narrowed, making it difficult for blood to flow through the vessels. As a result, the blood pressure in these arteries -- called pulmonary arteries -- rises far above normal levels.
Homeostatic Control Mechanisms Homeostatic Control Mechanisms are devices for maintaining or restoring homeostasis. They involve virtually all of the bodyâs organs and systems.
The term used to to describe the ability of an organism to maintain balance in its internal environment is called 'homeostasis'. 1  Homeostasis is achieved by a mechanism involving three components. The Receptor (or sensor), The Control Center (Processor) and the Effector.