The walls of the left atrium are slightly thicker than the walls of the right atrium. Oxygen-rich blood from the lungs enters the left atrium through the pulmonary vein. The blood is then pumped into the left ventricle chamber of the heart through the mitral valve.From there, the blood is ready to be pumped into the body to deliver oxygen-rich blood to all bodily tissues.he blood is then pumped into the left ventricle chamber of the heart through the mitral valve. From there, the blood is ready to be pumped into the body to deliver oxygen-rich blood to all bodily tissues.
The IRS will begin accepting 2016 tax returns on Jan. 23, and this yearâs deadline is April 18 â not 15 â because the deadline arrives on a weekend and is followed by the Emancipation Day holiday in Washington.
How long does it take for IRS to accept a return? I just finished mine at about 130pm eastern time (1/31/12) IRS refund schedule says if it is accepted by 11am TOMORROW, Ill get my refund next week. It would really suck if I would have to wait an extra week of it's accepted AFTER 11am tomorrow LoL I'm just curious.