The liver is the first organ to receive nutrients that are absorbed from the GI tract. It is the 'gatekeeper' and is responsible for filtering out possible toxins before they reach delicate tissues such as the brain. The hepatic vein takes blood from the liver to the heart.
The Hepatic portal vein
Liver
heart
liver
The brain.
Alcohol is a liquid that is absorbed directly into the blood stream from the stomach. Food is absorbed through the intestines, but it must be broken down first. That is why alcohol is absorbed faster.
the left atrium
Left atrium.
Hands down, sugars, eg. circulating circlating blood glucose. The body next uses complex carbs. When intake of sugars or carbs exceeds body's energy needs, it converts to glycogen stored in fat cells. As the body continues to receive more than it uses, it continues to build fat cells.
It never 'receives' blood. It makes its own. In humans the first red blood cells show up at the end if the first month.
First, monosaccharides consist of glucose, fructose, and galactose. These are the most simple sugars that exist. The benefit of these sugars is that the body does not need to break down the sugar to use them. Therefore, the sugars go into the blood stream more quickly and gives energy more quickly and increases blood sugar quickly.