What happens to blood after it passes through the small intestine?

As we all know, the circulation of blood in the body is crucial for the normal human life activities. Blood flows through various parts of the body, which can transport nutrients. It also exchanges nutrients, such as transporting oxygen to where it is needed, and then transporting carbon dioxide out of the body. So if the human body's blood flows through the small intestine, what changes will occur before and after?

Changes in blood flow through the small intestine:

Water, protein, fat, and sugar will all change.

The protein is further hydrolyzed by trypsin and absorbed in the small intestine

Fat is hydrolyzed by lipase and absorbed in the small intestine

Starch is hydrolyzed by amylase and absorbed in the small intestine

Water is absorbed by the small intestine

How do substances change as blood flows through the small intestine? What is the difference between the composition of intestinal arterial blood and intestinal venous blood?

answer:

Because there are capillaries in the small intestine, it is the place for material exchange. Nutrients enter the blood. The intestinal veins are richer in nutrients than the intestinal arteries.

When it passes through the small intestine, the nutrients increase and the color changes from bright red to dark red. When it passes through the lungs for gas exchange, the color changes from dark red to bright red. When it passes through the glomerulus, there is no change in color and the amount of urea decreases. When it passes through the renal tubules, the amount of water increases and the amount of urea decreases and the color becomes darker. The amount of carbon dioxide passing through tissue cells increases, the amount of nutrients decreases, the amount of waste increases, and the amount of oxygen decreases.

(1) When gas A enters the alveoli from the outside, the intercostal muscles and diaphragm are in a contracted state.

(2) When the blood temperature changes from 11 to 12, what changes occur in the blood composition: the oxygen content decreases

(3) Compared with the blood in blood vessel [4], the concentration of macromolecules in the blood in blood vessel [5] is significantly higher, which is related to the function of glomeruli [6]. When blood passes through the kidneys, the blood components whose content is significantly reduced include urea, oxygen, and nutrients.

(4) In the blood circulation system, blood can only flow in a certain direction and cannot flow backwards. The main reason is the presence of various valves

(5) During a weekend outing, Wu Ming ate expired food from a roadside stall, which resulted in abdominal pain, diarrhea and other symptoms.

① He went to the hospital for a routine blood test. Based on the test results, the doctor diagnosed him with acute enteritis, based on the increase in the number of white blood cells.

②The doctor also found in the blood test that the student’s red blood cell and hemoglobin levels were low, and judged that he might be suffering from anemia. In terms of his daily diet, the advice to him is to eat more foods rich in iron and protein.

③If F is found to contain red blood cells and protein, it may be that the glomerulus has been diseased.