The metabolic activity of any tissue is limited by its blood supply; the more active any organ ... deoxygenated blood to posterior gills and the lungs from the right side of the ventricle. This is the ...

If you clench your hand into a fist, this is approximately the same size as your heart. It is located in the middle of the chest and slightly towards the left. The heart is a large muscular pump ...

If you clench your hand into a fist, this is approximately the same size as your heart. It is located in the middle of the chest and slightly towards the left. The heart is a large muscular pump ...