31) The action of the parathyroid hormone is counteracted by
A) thyroxin.
B) calcitonin.
C) oxytocin.
D) GH.
32) The adrenal medulla secretes
A) aldosterone.
B) cortisol.
C) epinephrine and norepinephrine.
D) glucocorticoids.
33) Which of the following is
not
part of the anterior lobe of the pituitary?
A) pars distalis
B) pars intermedia
C) pars tuberalis
D) pars nervosa
34) Which endocrine gland stands out in X-ray images and helps radiologists get oriented in the brain?
A) the pineal gland
B) the pituitary gland
C) the hypothalamus
D) the thyroid gland
35) Which of the following minerals is essential for the formation of thyroid hormone?
A) iodine
B) calcium
C) iron
D) copper
36) Somatostatin
A) increases the release of insulin.
B) increases the release of glucagon.
C) inhibits the secretion of insulin and glucagon.
D) inhibits the exocrine activity of the pancreas.
37) Which of the following is a major source of steroid hormones in the body?
A) the gonads
B) the adrenal medulla
C) the thyroid
D) the pituitary
38) The hormone produced by the heart
A) decreases urine output.
B) increases calcium levels in the blood.
C) is secreted in response to low blood volumes.
D) increases the excretion of sodium in the urine.
39) Which of the following endocrine glands develops primarily from the endoderm of the pharynx?
A) anterior and posterior lobes of the pituitary
B) thyroid and parathyroids
C) pineal
D) adrenal medulla
40) Which of the following hormones indirectly increases the secretion of aldosterone from the adrenal cortex?
A) ACTH
B) renin
C) TSH
D) corticotropin-releasing hormone