An organ is defined as âa group of tissues that perform a specific function or group of functionsâ. Since an artificial heart is not made up of tissues, itâs not an organ. Maybe we need to change the definition of âorganâ, but for right now, this is how it stands. Related Questions.
The symbol on the back of the U.S. dollar bill is the Great Seal of the United States. The face (obverse) of the Great Seal first appeared on the back of the $20 Gold Certificate, Series 1905. In 1935, both the face and back (reverse) of the seal appeared for the first time on paper money on $1 Silver Certificates.
Federal reserve district number. On the front of the dollar bill, a one- or two-digit number appears four times. This number refers to the Federal Reserve Bank that printed the bill. A â1,â for instance, would mean it was made in Boston, while â2â refers to New York. Learn how to pick the right bank for your everyday needs.