Medullary ischemic reflex
- Medullary ischemic reflex
-
The medullary ischemic reflex is a big response to a drop in blood pressure in the brain particularly in the medulla, where the lack of oxygen due to decreased perfusion triggers an autonomic response from the cardiac and vasomotor centers. The cardiac and vasomotor centers respond to the decrease in blood pressure with sympathetic outflow to the heart and blood vessels. This outflow causes increased heart rate and force of contraction, as well as bodywide vasoconstriction. Together these responses increase blood pressure and perfusion rate to the brain, ending the feedback loop. [1]
References
- ^ Saladin,Kenneth S. Anatomy and Physiology, The Unity of Form and Function. v4. McGraw-Hill. NY, 2007. (767)
Wikimedia Foundation.
2010.
Look at other dictionaries:
Cushing reflex — (also referred to as the vasopressor response, the Cushing effect, the Cushing reaction, the Cushing phenomenon, the Cushing response, or Cushing s Law) is a physiological nervous system response to increased intracranial pressure (ICP) that… … Wikipedia
nervous system disease — Introduction any of the diseases or disorders that affect the functioning of the human nervous system (nervous system, human). Everything that humans sense, consider, and effect and all the unlearned reflexes of the body depend on the… … Universalium
syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… … Medical dictionary
Cerebrovascular disease — Classification and external resources Cerebrovascular disease is a group of brain dysfunctions related to disease of the blood vessels supplying the brain. Hypertension is the most important cause; it damages the blood vessel lining, endothelium … Wikipedia
Brain stem death — is the specific formulation of the concept of brain death formally adopted in the UK in 1995.DiagnosisThe diagnostic features of brain stem death are a deep coma, dependence for oxygenation on a mechanical ventilator, and the absence of specified … Wikipedia
Nystagmus — Horizontal optokinetic nystagmus, a normal (physiological) form of nystagmus ICD 10 H55, H81.4 … Wikipedia
List of cutaneous conditions — This is an incomplete list, which may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries. See also: Cutaneous conditions, Category:Cutaneous conditions, and ICD 10… … Wikipedia
Internuclear ophthalmoplegia — Classification and external resources Schematic demonstrating right internuclear ophthalmoplegia, caused by injury of the right medial longitudinal fasciculus. ICD 10 … Wikipedia
List of neurological disorders — This is a list of major and frequently observed neurological disorders (e.g., Alzheimer s disease), symptoms (e.g., back pain), signs (e.g., aphasia) and syndromes (e.g., Aicardi syndrome). Contents: Top · 0–9 A B C D E F G H I J K L M N O P … Wikipedia
Millard-Gubler syndrome — Classification and external resources Pons ICD 10 G … Wikipedia
