Physiology Venous return to heart during quiet standing is facilitated by all of the following factors, except A Calf muscle contraction during standing B Valves in perforators C Sleeves of deep fascia D Gravitational increase in arterial pressure 💡 Explanation Venous return to heart during quiet standing is facilitated by all of the following factors, except ✓ Correct Answer: D. Gravitational increase in arterial pressure