Human health indicators

(1) As can be seen from the figure, liquid A represents lymph, liquid B represents tissue fluid, and liquid C represents plasma, which are isomorphic to form the internal environment on which tissues and cells in the human body depend. The composition and content of the three liquids are similar, but the plasma contains more protein.

(2) The pH value in plasma remains relatively stable, mainly because the plasma contains HC03- and HPO4-? As a buffering substance, plasma can buffer acidic or alkaline substances entering the environment. The increase of osmotic pressure will stimulate the osmotic pressure receptor in the middle hypothalamus, increase the secretion of antidiuretic hormone, and promote the reabsorption of water by renal tubules and collecting ducts.

(3) The plasma glucose concentration of normal people is 0.8- 1.2g/L (0.9? Grams/liter). When we just eat, the insulin secreted by cells will increase due to the increase of blood sugar content. This hormone can promote tissue cells to accelerate the intake, utilization and storage of glucose, thus reducing blood sugar levels.

So the answer is:

(1) lymph? protein

(2)HC03-, HPO4- hypothalamus? Renal tubules and collecting ducts

(3)0.8 - 1.2g/L(0.9？ G/L) the intake, utilization and storage of islet b.