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).
Based on the residency year, an average yearly salary for a first year intern is around $49,052 which gradually increases to $51,145 during 2nd year. An average yearly salary for an intern in 3rd year of residency program is around $52,503, and those in their 7th year earn around $61,283 per annum.ased on the residency year, an average yearly salary for a first year intern is around $49,052 which gradually increases to $51,145 during 2nd year. An average yearly salary for an intern in 3rd year of residency program is around $52,503, and those in their 7th year earn around $61,283 per annum.