All of them.
Alcohol and poison
your body absorbs the nutrients in food through the lining of your stomach and intestine, and they go directly into the bloodstream. Alcohol does this too, that is why the cops measure your BAC, Blood Alcohol Content.
Vitamins that are water- soluble directly enter the bloodstream. Examples of these vitamins are B vitamins, biotin, pantothenic acid, folate and vitamin C.
The placenta is the structure that facilitates the transfer of nutrients directly from the mother to the human embryo during pregnancy. Through the umbilical cord, nutrients pass from the mother's bloodstream to the embryo's bloodstream, providing essential nourishment for the developing fetus.
Digestion
Nutrients are absorbed into the bloodstream primarily in the small intestine.
Muscle tissue itself does not absorb nutrients directly from food; instead, nutrients are absorbed by the intestines into the bloodstream after digestion. The bloodstream then transports these nutrients, such as amino acids and glucose, to muscles and other tissues in the body. Muscles utilize these nutrients for energy, growth, and repair, but the absorption process occurs primarily in the digestive system.
it goes trough the bloodstream
After nutrients are broken down during digestion, they are absorbed through the walls of the small intestine into the bloodstream. From there, they are transported to cells throughout the body where they are used as energy, stored for future use, or incorporated into various cellular structures. Unused nutrients may be stored as fat or excreted.
It may go from the lymph to the bloodstream or penetrate blood vessels, directly allowing it a route to go elsewhere in the body.
Not everything that goes in your mouth enters your bloodstream. The digestive system helps break down food into nutrients that can be absorbed into the bloodstream, while waste products are eliminated. Some substances, like medications and alcohol, can enter the bloodstream directly through absorption in the mouth.
through cells