The pancreas increases its output of insulin in response to a. an increase in blood

Which of the following statements concerning homeostasis is not true? a. It is the maintenance of constant internal conditions. b. It involves the regulation of body conditions, such as glucose level. c. It usually prevents major fluctuations in body conditions. d. Its maintenance is solely the responsibility of the endocrine system.

The hormone gastrin causes specific stomach cells to secrete stomach acid. The receptors for gastrin are on the plasma membrane of the stomach cells. Gastrin is likely a a. water-soluble hormone. b. lipid-soluble hormone.

Explain how the same hormone can have different effects on two different target cells and no effect on a third type of cell.

Which of the following controls the activity of all the others? a. thyroid gland b. hypothalamus c. pituitary gland d. adrenal cortex

Why does the consumption of alcohol lead to frequent urination?

A patient comes to a local health clinic with a large swelling in the neck that appears to be goiter. As the physician is taking the patients history, the patient mentions not using iodized salt. The patient is overweight and has a slow metabolism. Does this patient have hyperthyroidism or hypothyroidism? How is this problem related to the lack of iodine in the diet?

The pancreas increases its output of insulin in response to a. an increase in blood glucose. b. a hormone secreted by the anterior pituitary. c. both of these choices.

Your roommate has just been diagnosed as hyperglycemic, which means having an unusually high blood glucose level. Which of the following could be characteristic of this disorder? a. Too much insulin is produced after a high-sugar snack. b. The hormone glucagon is underactive. c. The receptors on cells do not respond to insulin. d. any of the above

Name the gland that each of the following hormones is secreted from: cortisol, epinephrine, oxytocin, releasing hormones, estrogen, glucagon, and progesterone.

Testosterone belongs to a class of sex hormones called __________.

For each of the following situations, name the hormone(s) that is most likely responsible for the effect described. a. A college student feels his heart racing when he finds out at the start of class it is exam day and he is not prepared. The feeling is caused by __________ and __________. b. A 9-year-old child has been diagnosed with pituitary dwarfism. The hormone that is lacking is __________. c. As part of her treatment for ovarian cancer, a 30-year-old female has both ovaries removed. She begins to notice changes in her skin and breast tissue. These changes are caused by a lack of __________.

Interpreting Data. Look back at Figure 25.12 and its associated description in the text. Determine whether each statement below is supported or not supported by the data and explain your reasoning. a. About 30% of low-income patients admitted to the hospital suffer from hypoglycemia in the last week of a month. b. The number of patients admitted with hypoglycemia was always higher in the low-income group compared to the high-income group. c. The difference between low-income and high-income patients more than doubles between week 1 and week 4.

Mice from a genetically modified strain remain healthy as long as they are fed regularly and not allowed to exercise. After they eat, their blood glucose level rises slightly and then declines to a homeostatic level. However, if these mice fast or exercise at all, their blood glucose drops dangerously. Which hypothesis best explains their problem? Explain your choice. a. The mice have insulin-dependent diabetes. b. The mice lack insulin receptors on their cells. c. The mice lack glucagon receptors on their cells. d. The mice cannot synthesize glycogen from glucose.

Professional athletes face pressure to perform at the highest level, and sometimes that leads them to abuse banned substances. For what purpose do athletes abuse anabolic steroids or human growth hormone (HGH)? Mark McGwire admitted to using a steroid during his home run streak in 1998, before it was a prohibited substance. Was this cheating? Explain your answer. Some fans feel that one solution to the rampant abuse of banned substances is to simply remove the ban. Do you agree or disagree? What are the consequences of a decision like this?

Type 2 diabetes is becoming increasingly common in the United States. The primary risk factor for type 2 diabetes is a history of obesity. Statistics show that children are becoming obese at an alarmingly high rate, and this correlates with increased rates of type 2 diabetes. When young children become overweight, the problem is usually blamed on nutrition and exercise choices made by the parents. Why do you think todays parents have a harder time feeding their children nutritious meals and providing an exercise program than did parents of previous generations? What can be done to solve this problem? Additionally, diabetes is more common in low-income populations than in wealthy populations. What are possible reasons for this?