The following statement about the regulation of blood sugar balance is correct

The answer should be d, and the reason is:

1. From the 35 environment to the 18 environment, the temperature difference between the environment and the body increases, so the heat dissipation increases, just as hot water cools faster in a cooler environment, because the larger the temperature difference with the environment, the faster the heat dissipation.

2. Human beings are homeothermic animals, and when heat dissipation increases, heat production will inevitably increase, so as to maintain a constant body temperature.

3. Some students may think that capillary constriction when entering a colder environment will reduce heat dissipation, but in fact, heat dissipation should be suppressed, that is, heat dissipation will increase, but the increase will decrease due to capillary constriction. (When I was studying, I didn't understand the word "inhibition" all the time, and in biology "inhibition" means to reduce the increase in the amount of something in life, and "inhibition of heat dissipation" means that the heat dissipation still increases, but the increase will decrease.) ）

Answer: A normal person enters a place with a low temperature from a place with a high temperature, because the body temperature is to be maintained, so the heat dissipation will be reduced and the heat production will increase.

People are at a constant temperature, and when the temperature difference increases, the heat dissipation increases. In order to keep the body temperature constant, thermogenesis also subsequently increases. (heat dissipation is related to temperature difference) d

Choose D, that's when you just enter, and you will gradually adapt and stabilize later.

Answer]: CPhysiological increase in blood sugar is seen 1 2 hours after meals, high-sugar diet, strenuous exercise, emotional agitation, etc.; Pathologically elevated blood glucose is seen in: Various types of muffled diabetes mellitus.

Endocrine diseases: such as hyperthyroidism, acromegaly, gigantism, pheochromocytoma, adrenal hyperfunction, glucagonoma, etc. Stress Factors:

Such as head trauma, acute cerebrovascular disease, central nervous system infection, myocardial infarction, extensive burns, etc. Liver and pancreatic diseases: such as severe liver damage, necrotizing pancreatitis, pancreatic cancer, etc.

Others: such as vomiting, dehydration, hypoxia, anesthesia, etc.

Answer: The physiological effects of insulin produced by islet B cells can lower blood glucose concentrations, while glucagon produced by islet A cells can increase blood glucose concentrations, and the two physiological effects are antagonistic to each other. Diabetic patients are caused by lesions of pancreatic B cells.

Answer: D islet A cells secrete glucagon, and B cells secrete insulin; Insulin has the effect of lowering blood sugar, and glucagon has the effect of raising blood sugar, and the effect of these two hormones is antagonistic; Diabetes mellitus is caused by damage to pancreatic B cells and insufficient insulin secretion; The oxidative utilization of intracellular glucose is impaired, indicating that there is diabetes, and the blood sugar of diabetic patients remains high but does not drop.

Glucagon is opposed to insulin and plays a role in increasing blood sugar. After eating, the body's absorption of sugar and blood sugar increases, and insulin must be increased to lower glucagon.

Tell you that the 2005 Guangdong college entrance examination question is controversial.

AD is fine.

The reason for choosing A is that when the human pancreatic islet B cells are damaged, resulting in insufficient insulin secretion, the oxidative utilization of intracellular glucose is impaired, which can lead to a continuous increase in blood sugar.

Hyperglycemia occurs, and when the blood glucose level is higher than 160 180 mg dl, sugar is excreted from the kidneys and glycosuria occurs. The pancreatic islet A cells in the pancreatic islet cells secrete glucagon to increase the blood glucose concentration, and the pancreatic islet B cells secrete insulin to lower the blood glucose, both of which are antagonistic effects to regulate blood glucose balance.

The reason for choosing D is that pancreatic islet cells are divided into pancreatic A cells and pancreatic B cells, which secrete glucagon and insulin, respectively. The two are involved in the regulation of blood sugar through the secretion of hormones.

There are many causes of diabetes, mainly due to the destruction or failure of Mambi pancreatic islet B cells (another situation is: there is no antibody on the target cell to recognize insulin or the antibody changes), and the oxidative utilization of glucose in the cell is impaired, depending on the specific situation, for diabetic patients blood sugar will rise, for healthy people, the situation is not necessarily.

Answer] B Answer Analysis] Slow analysis of test questions: Adrenaline promotes the breakdown of glycogen, so it plays a role in raising blood sugar, B is correct. The ACD's narrative is correct, and B is selected for this question.

Test Center: Blood Sugar Balance Regulation.

a. Insulin can promote the fine tissues of the whole body.

The DU cells accelerate the uptake, utilization, and storage of grape DAO sugars, thereby reducing the blood glucose concentration, i.e., promoting response.

In the figure, process, a is correct;

b. Glucagon can promote glycogenolysis and promote the conversion of some non-sugar substances into glucose, so that blood sugar levels rise, that is, promote the process in the figure, B is correct;

c. Indicates the oxidative decomposition of sugars (cellular respiration) and glycogen (muscle glycogen and hepatic glycogen) synthesis process, both of which can occur in muscle and liver cells, c is correct;

d. When the body cannot produce enough insulin, hyperglycemia will occur