On the inside of your trachea there is a mucous membrane that lines it that is sensitive and will stimulate the coughing reflex to get rid of any foreign bodies that have entered your trachea. It is part of your respiratory system.
The Best Time to File. Unlike with a paper return, there really is no best time to file a federal tax return electronically. Whether you file on Feb. 1 or on April 15, you can expect the IRS to issue a direct deposit refund within 21 days from the date the IRS accepts your return.
It can take up to 21 calendar days after acceptance for the IRS to issue your refund, although most refunds go more quickly than that, while a small handful may take a bit longer. Start tracking your federal refund at the IRS Where's My Refund site. For state refunds, go to your state government's refund lookup service.