The auditory system changes a wide range of weak mechanical signals into a complex series of electrical signals in the central nervous system. Sound is a series of pressure changes in the air.
Itâs Not Too Late to Maximize Your 2016 HSA Contributions: Contribute Until April 17, 2017. One of the big pros of enrolling in a high-deductible health plan is that it is paired with a Health Savings Account (HSA).
Limit on Contributions. 1  The contribution amount to an HSA can depend on the type of HDHP coverage you have, your age and the date you become an eligible individual, and the date you cease to be an eligible individual. If you were, or were considered (under the last-month rule), an eligible individual for the entire year and did not change your type of coverage, you can contribute the full amount based on your coverage.