Varicose veins seen in the superficial veins of the legs are unsightly and often treated by surgically removing them. However, e
ven without these veins being present, the return of all blood toward the heart from the legs is not diminished primarily because ______. Varicose veins seen in the superficial veins of the legs are unsightly and often treated by surgically removing them. However, even without these veins being present, the return of all blood toward the heart from the legs is not diminished primarily because ______. the precapillary sphincters will contract to prevent blood from flowing toward areas where veins have been removed blood can still return via the deep veins in the absence of the venous valves (that have been removed), the blood will backflow into the capillary beds and then flow into other venules All of the listed responses are correct.
The venous system at the leg is known for its complexity and highly branched nature. The superficial and deep veins, both branches and connects with each other at different points along their length
This would happen because we have devices such as seismographs to record the motion of the ground during an earthquake. Without that, we wouldn't know how big the earthquake is and how to prepare for survival.
