Question

Explain nutrients are not really inside the body until they have passed through the wall of the small intestine

Answer 1

The reason why is because when you eat food the food has to be digested and during the process the food has to go through the small intestine to get the nutrients. When the food is in the small intestine it squeezes and churns all of the nutrients out of the food so your body can obtain them, so until the food passes through the small intestine no nutrients will be inside the body.