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.
Homeostasis is the characteristic of an organism to regulate its internal conditions. An example is the body regulating its internal temperature by shivering or sweating. Acid-Base Balance. The body controls the amounts of acids and bases in the blood. When the number of acidic compounds in the blood increases, body acidity also increases.