Digestive System and Oral Physiological Phenomena
Reproductive and Urinary Physiological Phenomena
Musculoskeletal and Neural Physiological Phenomena
Circulatory and Respiratory Physiological Phenomena
Integumentary System Physiological Phenomena
Sports Nutritional Physiological Phenomena
Nutritional physiology related to EXERCISE or ATHLETIC PERFORMANCE.
Reproductive Physiological Phenomena
Elder Nutritional Physiological Phenomena
Urinary Tract Physiological Phenomena
Digestive System Physiological Phenomena
Ocular Physiological Phenomena
Nervous System Physiological Phenomena
Respiratory Physiological Phenomena
Skin Physiological Phenomena
Plant Physiological Phenomena
Cardiovascular Physiological Phenomena
Maternal Nutritional Physiological Phenomena
Nutritional Physiological Phenomena
The number of times the HEART VENTRICLES contract per unit of time, usually per minute.
Encyclopedias as Topic
Receptors, Lymphocyte Homing
Cell surface glycoproteins on lymphocytes and other leukocytes that mediate adhesion to specialized blood vessels called high endothelial venules. Several different classes of lymphocyte homing receptors have been identified, and they appear to target different surface molecules (addressins) on high endothelial venules in different tissues. The adhesion plays a crucial role in the trafficking of lymphocytes.
A response by the BARORECEPTORS to increased BLOOD PRESSURE. Increased pressure stretches BLOOD VESSELS which activates the baroreceptors in the vessel walls. The net response of the CENTRAL NERVOUS SYSTEM is a reduction of central sympathetic outflow. This reduces blood pressure both by decreasing peripheral VASCULAR RESISTANCE and by lowering CARDIAC OUTPUT. Because the baroreceptors are tonically active, the baroreflex can compensate rapidly for both increases and decreases in blood pressure.
Autonomic Nervous System
The ENTERIC NERVOUS SYSTEM; PARASYMPATHETIC NERVOUS SYSTEM; and SYMPATHETIC NERVOUS SYSTEM taken together. Generally speaking, the autonomic nervous system regulates the internal environment during both peaceful activity and physical or emotional stress. Autonomic activity is controlled and integrated by the CENTRAL NERVOUS SYSTEM, especially the HYPOTHALAMUS and the SOLITARY NUCLEUS, which receive information relayed from VISCERAL AFFERENTS.
Death, Sudden, Cardiac
Unexpected rapid natural death due to cardiovascular collapse within one hour of initial symptoms. It is usually caused by the worsening of existing heart diseases. The sudden onset of symptoms, such as CHEST PAIN and CARDIAC ARRHYTHMIAS, particularly VENTRICULAR TACHYCARDIA, can lead to the loss of consciousness and cardiac arrest followed by biological death. (from Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine, 7th ed., 2005)