What passes for a starfish's circulatory system uses ocean water instead of blood. This is essentially a series of tubes that extend from the stomach to the arms to transport nutrients. A starfish doesn't have a heart, but water running through the arms and feet provides oxygen.
The average internist has a salary of $186,850 a year ($89.83 an hour). An entry level internist can expect to earn $60,870 a year ($29.26 an hour) while an experienced internist has an average annual salary of greater than $187,200 a year (greater than $90.00 an hour).n entry level internist can expect to earn $60,870 a year ($29.26 an hour) while an experienced internist has an average annual salary of greater than $187,200 a year (greater than $90.00 an hour).
As of January 2011, the lowest an internist makes without any sub-specialties, is $146,525 and the highest they make is $227,419. Of course experience increases the numbers and also internists who work in rural areas make more money than internists who work in the urban areas.n Family Practice, doctors deal with the treatment of children and adults. Just like family practice, Internal Medicine is a residency by itself and most doctors are internal medicine physicians.