Circulatory System: Facts, Function & Diseases. The circulatory system is a vast network of organs and vessels that is responsible for the flow of blood, nutrients, hormones, oxygen and other gases to and from cells.
And I must make one more important point about all this maximum benefit business. I just said that the maximum Social Security benefit this year is $2,663. But there are many people getting more than that.
The program is funded through tax withholdings. In 2017, Social Security withholding is 6.2% of the employee's gross pay. The employee must pay this until they reach the wage base limit. Earnings above the wage base limit are generally not subject to social security tax. The wage base limit for 2017 is $127,200.