Medullary ischemic reflex
From Self-sufficiency
This article is an orphan, as few or no other articles link to it. Please introduce links to this page from related articles; suggestions may be available. (August 2009) |
This article may need to be wikified to meet Wikipedia's quality standards. Please help by adding relevant internal links, or by improving the article's layout. (August 2009) Click [show] on right for more details.
No reason has been cited for the Wikify tag on this article.
|
The medullary ishemic reflex is a 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 contration, 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)
