Blood usually passes through one network of capillaries from the time it leaves the heart until the time it returns, but there are exceptions, notably the .

b. lithosphere, asthenosphere, mesosphere   is the answer most likely

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.

you should wear a lead protective shield when having teeth x-rays

hope i

-lavira : )