(2) If the human body does strenuous exercise for a long time, muscle cells will have anaerobic respiration due to insufficient aerobic respiration, thus producing a large amount of lactic acid. At this time, sodium bicarbonate or sodium hydrogen phosphate in extracellular fluid will regulate the internal environment to reach a steady state. For example, sodium bicarbonate will react with lactic acid to produce sodium lactate and carbonic acid, which can be decomposed into water and carbon dioxide, thus maintaining a relatively stable PH value.
(3) The main components of blood lipids are cholesterol, triglycerides and free fatty acids, and phospholipids constitute the basic skeleton of biofilm and do not belong to the internal environment.
(4) Endogenous triglycerides are transported in the form of very low density lipoprotein in blood.
(5) Insulin can reduce blood sugar by promoting the transformation of blood sugar into non-sugar substances, that is, promoting the transformation of glucose into triglycerides in liver cells and fat cells, that is, ⑦ ⑧ process.
(6) Blood pressure can be measured at brachial artery of upper arm; Human blood pressure is regulated by nerves and body fluids (hormones).
(7) Hypothalamus is the center of body temperature regulation, which can feel the osmotic pressure change of extracellular fluid and participate in regulating water-salt balance; Can synthesize antidiuretic hormone and so on.
So the answer is:
(1) cerebral cortex
(2) lactic acid? Sodium bicarbonate or sodium hydrogen phosphate
(3) Alkaline catalytic decomposition
(4) Very low density lipoprotein
(5) BC
(6) Brachial artery nerves and body fluids (hormones)
(7) Hypothalamus is the center of body temperature regulation, which can feel the osmotic pressure change of extracellular fluid and participate in regulating water-salt balance; Can synthesize antidiuretic hormone, etc.