Elevated blood pressure activates baroreceptors, signaling the cardiac and vasomotor centers to decrease heart rate and force of contraction (cardiac center) and cause vasodilation (vasomotor center), ultimately lowering blood pressure.
1. Increased BP activates baroreceptors in the carotid sinus and aortic arch 2. Baroreceptors send info to the cardiac and vasomotor center 3. Vasomotor center decreases actiity which causes vasodilation 4. Cardiac center decreases sympathetic input to the heart which decreases heart rate and force of contraction 5. Net effect: blood volume is decreased and resisance is decreased (vasodilation) 6. BP returned to normal <img src="paste-dce86fd58472baee4d4baf4a386bbbc9620a971e.jpg">
| Front | Explain the pathway for elevated BP |
|---|---|
| Back | 1. Increased BP activates baroreceptors in the carotid sinus and aortic arch 2. Baroreceptors send info to the cardiac and vasomotor center 3. Vasomotor center decreases actiity which causes vasodilation 4. Cardiac center decreases sympathetic input to the heart which decreases heart rate and force of contraction 5. Net effect: blood volume is decreased and resisance is decreased (vasodilation) 6. BP returned to normal |
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