After atrial contraction is complete, the atrial pressure begins to fall causing a pressure gradient reversal across the AV valves. This causes the valves to float upward (pre-position) before closure. At this time, the ventricular volumes are maximal, which is termed the end-diastolic volume (EDV).
How do I obtain Underage Working Papers in New York State? I'm 16 years old. I got a job at a movie theater for the summer, but they require Working Papers (something they called a green card) in order for me to work, since I'm under the age of 18.
Generally, children must be at least 14 years of age in order to work. However, there are some exceptions to this. Exceptions include but are not limited to children employed by their parents in non-hazardous occupations, household chores, paper routes, farm work and child actors/actresses.