Chapter 10

Choose the incorrect statement: a. Endocrine glands secrete their hormones through ducts. b. The endocrine system consists of endocrine glands and organs with endocrine tissue. c. Negative feedback mechanisms regulate the secretion of most hormones. d. During positive feedback, the outcome of a process feeds back to the system and stimulates the process to continue.

The interaction between glucagon and insulin is described as a. permissive. b. synergistic. c. antagonistic. d. tropic.

The posterior pituitary gland a. stores and releases antidiuretic hormone. b. produces and secretes growth hormone.

Choose the incorrect statement: a. The pancreas has endocrine and exocrine cells. b. Glucagon increases glucose in the blood. c. Insulin is an example of a local signaling molecule. d. Insulin stimulates the movement of glucose into cells.

Prostaglandins a. act more rapidly than hormones. b. act on nearby target cells. c. are examples of growth factors. d. a and b

Choose the incorrect statement: a. The anterior pituitary releases calcitonin. b. The anterior pituitary has a circulatory connection to the hypothalamus. c. The anterior pituitary produces several tropic hormones. d. The anterior pituitary produces growth hormone and prolactin.

A diet deficient in iodine may produce a. cretinism. b. Graves' disease. c. Cushing's syndrome. d. goiter.

Which of the following does not characterize the adrenal medulla? a. inner region of the adrenal gland b. secretes epinephrine and norepinephrine c. secretes glucocorticoids d. secretes hormones involved in fight-or-flight response

Which of the following does not occur in a healthy person's body after meals? a. The pancreas secretes insulin. b. The liver stops breakdown of glycogen. c. The pancreas secretes glucagon. d. Muscle cells take up glucose.

Overproduction of melatonin by the pineal gland may cause a. seasonal affective disorder. b. diabetes insipidus. c. acromegaly. d. Addison's disease.

Oversecretion of growth hormone in childhood causes ____. Oversecretion in adulthood catuses _____.