1 Frontal- one sinus per side, located within the bone of the forehead above the level of the eyes and nasal bridge (figures 1 and 3).  Sphenoid- one sinus per side, located behind the ethmoid sinuses; the sphenoid is not seen in a head-on view but is better appreciated looking at a side view (figure 3).
During upright exercise, the normal blood pressure response is to observe a progressive increase in systolic blood pressure with no change or even a slight decrease in diastolic blood pressure. The slight decrease in diastolic blood pressure is due primarily to the vasodilation of the arteries from the exercise bout.
You may also notice that your feet and hands fall asleep often. To increase blood flow to your entire body and these extremities, it is important to implement a few daily activities, which readily allow oxygen to flow throughout the body more efficiently. Follow these tips to decrease poor circulation and increase blood flow. Ad.