1 Gently rub a pumice stone back and forth across the affected area for three to five minutes and then pat dry your feet. 2  Dip a cotton ball in castor oil and place it on the corn. Secure it with tape and leave it on overnight.  The next morning, remove the bandage and apply castor oil several times a day.
1. I am confused regarding the presence of valves in the superior vena cava. The superior vena cava does not possess valves unlike inferior vena cava, which possesses Eustachian Valve.
Answers. Best Answer: The superior vena cava and the inferior vena cava both enter the heart at the right atrium. The difference is that-as the name suggests-the superior vena vava carried deoxygenated blood back to the heart from the upper areas of the body (in Latin, superior == above).imilalry, the inferior vena cava carried deoxygenated blood from the lower regions of the body back to the heart (in Latin, 'inferior' == lower).