17 Heart and Circulation V

Determinants of systemic arterial pressure possible

Info iconThis preview shows pages 6–17. Sign up to view the full content.

View Full Document Right Arrow Icon
Determinants of Systemic Arterial Pressure
Background image of page 6

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Possible Causes of Hypertension Cardiac Factors : High heart rate and high contractility, caused by high sympathetic tone, Vascular Factors : High total peripheral resistance, caused by high sympathetic tone and high plasma [angiotensin II] Coupling Factors : High preload caused by high blood volume
Background image of page 7
Background image of page 8

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Antihypertensive Drugs Based on the Renin-Angiotensin System (From: Heart 93: 1026-1033, 2007)
Background image of page 9
Baroreceptor Reflex
Background image of page 10

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Locations of Arterial Baroreceptors
Background image of page 11
Effect of Changing Mean Arterial Pressure on Baroreceptor Action Potential Frequency
Background image of page 12

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Neural Components of the Arterial Baroreceptor Reflex
Background image of page 13
Baroreceptor Reflex (Negative Feedback) (+) Vagus (-) Sympathetic Tone HR HR, Contractility, TPR (-) Carotid and Aortic Baroreceptors Sensors Cardiovascular Center Controller Effectors BP Regulated Variable Negative Feedback
Background image of page 14

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Standing-Squatting-Standing Test of Baroreceptor Reflex (From: Autonomic Neurosc Basic Clin 162: 3-9, 2011) Stand Squat Stand Systolic Blood Pressure Diastolic Blood Pressure Mean Blood Pressure Pulse Pressure Heart Rate Baroreceptor Reflex
Background image of page 15
Physiological Significance of Baroreceptor Reflex Function : Minimize sudden changes in blood pressure in daily activities such as standing up Fast Adapation : Baroreceptor reflex adapts to prolonged
Background image of page 16

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 17
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page6 / 35

Determinants of Systemic Arterial Pressure Possible Causes...

This preview shows document pages 6 - 17. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online