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).
Open Deadline: April 15 of next year, no extension. Fund Deadline: April 15 of next year, no extension. Annual contribution limit may be affected by the number of months that you have an HDHP in a given tax year. You cannot use HSA funds to pay for expenses incurred prior to opening the account.