Channel: Interactive Biology

Category: Education

Tags: sympathetic nervous system (anatomical structure)cardiovascular systemrenin (hormone)interactive biologyhypertension (disease or medical condition)angiotensin

Description: interactive-biology.com - What are the mechanisms that underly the development of hypertension? How is the sympathetic nervous system involved? What does the Renin-angiotensin system have to do with anything. Watch and Learn. 00:00 Intro 00:10 Cardiac Output 00:23 Cardiac output = Heart Rate x Stroke Volume 00:38 Sample calculation: Cardiac Output 00:55 Blood pressure = Cardiac Output (CO) x Peripheral Resistance (PR) 01:15 Peripheral Resistance (PR) 02:00 Increased Arteriolar Vasoconstriction: Main cause of Increased PR 04:00 Renin - Angiotensin System 05:00 Release of angiotensinogen: Increased PR 06:39 Release of aldosterone: Increased CO 08:20 Increased PR and/or CO results in Increased BP 09:02 Effect of continually Increasing BP