What are the physiological signals that arrive at the heart

What are the physiological signals that arrive at the heart that drive the change in systolic blood pressure during exercise? (specifically where in the heart?)

Solution

During the exercise, the oxygen consumption increases and the production of carbon dioxide also increases. Increased CO2 levels and the changes in P_O2 is mainly sensed by the peripheral chemoreceptors located in the aortic bodies and carotid bodies. The decreased partial pressure of oxygen (lower than 50% of the normal) stimulate the respiratory center and thus, increase the rate of respiration and also increases the force of contraction of heart (raise in systolic pressure).