The following table shows the measurement data of the composition and content of substances in the i

1. The place where CO2 is produced is mitochondria, which is a double-membrane structure, penetrating the mitochondria, and a total of 4 phospholipid molecular layers are obtained from two membranes.

2. To penetrate the hepatocytes to reach the interstitial fluid, it needs to pass through a layer of cell membrane and two layers of phospholipid molecules.

3. From the interstitial fluid to the capillary wall cells, it needs to pass through a layer of cell membrane and two layers of phospholipid molecules.

4. From the capillary wall cells to the plasma, it needs to pass through a layer of cell membrane and two layers of phospholipid molecules.

4+2+2+2=10 layers.

3. Part of the carbon dioxide in anaerobic respiration and aerobic respiration comes from the cell membrane matrix.

Because the osmotic pressure decreases after the plasma protein concentration decreases, water penetrates into the tissue fluid.

The main function of CK+ is to maintain the osmotic pressure of the intracellular fluid, and the main function of Na+ is to maintain the osmotic pressure of the extracellular fluid, according to which it can be judged that it is the intracellular fluid and the extracellular fluid. The main difference between plasma and interstitial fluid is that plasma contains more proteins, so plasma is interstitial fluid. According to the function of the cell membrane, the main reason for the difference with the components of is the selective permeability of the cell membrane.

Where CO2 is produced**In the microchondria, it is necessary to cross at least two layers of mitochondrial membranes, tissue cell membranes, and capillary wall cell membranes (2 layers) to reach plasma, so it is at least 10 layers of phospholipid molecules. The decrease in protein content causes a decrease in osmotic pressure in the blood plasma, which allows water to enter the interstitial fluid, causing the interstitial fluid to absorb water, so it will increase.

Untie; The fluids in the human body are called body fluids, which can be divided into intracellular fluid and extracellular fluid, of which extracellular fluid is the environment in which human cells directly live, and it is also called the internal environment

Therefore, the answer is: intracellular fluid and extracellular fluid are masked.

a. All fluids in the human body are collectively referred to as body fluids, including intracellular fluid and extracellular fluid, and there is more intracellular fluid than extracellular fluid, accounting for about 2

3, a error;

b. The internal environment is the extracellular fluid, which is the liquid environment in which all tissue cells live, and its physical and chemical properties and chemical composition remain relatively stable, B is correct;

c. The main function of plasma is transportation, most of the nutrients absorbed by the digestive tract enter the capillaries and are transported by plasma, and the fat enters the capillary lymphatic vessels and is transported by the lymph, C is wrong;

D. The chemical composition of lymph, tissue fluid and plasma is similar, and plasma contains more protein, D is wrong

Therefore, b

The intracellular fluid of the somatic fluid and the interstitial fluid usually have the same () concentration.

b.Total osmolality.

c.Colloidal osmolality.

Concentration. Correct Answer: Total osmolality.

a. From the above analysis, it can be seen that it is intracellular fluid, which contains more proteins, K+, etc., and a is correct;

b. The decrease of protein in the plasma will lead to a decrease in plasma osmolality, a weakening of interstitial fluid reflux, and an increase in interstitial fluid, resulting in tissue edema, b. Correct;

c. CO2 in hepatocytes

Diffusion from the site of production (mitochondria of histiocytes) to plasma requires at least 5 layers of membranes (2 layers of mitochondrial membrane + 1 layer of tissue cell membrane + 2 layers of capillary wall cell membrane), that is, 10 layers of phospholipid molecules, c error;

D. It is tissue fluid and intracellular fluid, and the main reason for the difference in the composition of the two is that the cell membrane is selectively permeable, and D is correct

Therefore, c

Extracellular fluid includes blood and lymph; There are many similarities between the two ingredients

Extracellular fluid contains lymph. Put it this way. Body fluids contain both intracellular and extracellular fluids. Extracellular fluid contains interstitial fluid, lymph, cerebrospinal fluid, etc.

a. The extracellular fluid of the human body is the internal environment? , a correct;

b. There are nutrients in the chemical composition of the extracellular fluid; glucose, inorganic salts, etc., regulatory substances: such as hormones, antibodies, metabolic waste urea and other substances, b correct;

c. The content of intracellular fluid is large, and the amount of extracellular fluid is about 13 of the total body fluid, and C is correct;

d. The muscle cells of the small intestinal wall must also absorb glucose from the internal environment through the interstitial fluid