Which of the following is not part of the second layer (choroid)?

Which of the following is true regarding proper hand cleaning?

A) If the EMT's hands are visibly dirty, an alcohol-based hand cleaner is not sufficient. B) Soap and water should be used following any patient contact if the EMT does not wear gloves. C) Following patient contact, the EMT should soak his hands in warm soapy water for at least 30 seconds and then shake them vigorously. D) In cases where soap and water and alcohol-based hand cleaners are not immediately available, bleach wipes should be used.

One psi makes a column of mercury rise _____ feet

A. 0.433 B. 0.866 C. 2.04 D. 2.31