Below is the homeostatic reflex arc for heart rate and blood pressure. Please note that this homeostatic reflex begins once the activity has stopped to reset resting HR. Please match the following statements (on the left) to the appropriate steps in the pathway (on the right). You will use each match once. Heart rate slows Medulla oblongata 1. Stimulus 2. Receptor SA node (pacemaker) of heart 3. Integrating center Decreased CO2 waste products due to decreased oxygen consumption. 4. Effector 5. Response Baroréceptors that monitor stretch of aorta and how fast the heart is beating. 3.

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