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.
Human Physiology/Homeostasis - Other Examples. 1  Thermoregulation The skeletal muscles can shiver to produce heat if the body temperature is too low. 2  Chemical regulation The pancreas produces insulin and glucagon to control blood-sugar concentration. 3  Main examples of homeostasis in mammals are as follows...