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 body can control its inherent heart rate in a variety of ways. human body image by Alhazm Salemi from Fotolia.com. Homeostasis is derived from a Greek term that means same state. Biologically it refers to the way your body attempts to maintain constant internal conditions in an ever-changing external environment.The body can control internal conditions such as temperature, heart rate and blood pressure.It uses a monitoring system that detects outside conditions and makes the necessary hormonal changes to maintain a steady set point. The body can control heart rate using a variety of methods.uring stress or exercise, your body will cause the heart rate to increase in order to meet metabolic needs. The adrenal gland, which lies on top of both kidneys, releases a hormone called epinephrine; this hormone travels to the heart and attaches to certain receptors, causing the heart rate to increase.