1
Along with the ________ system, endocrine system hormones coordinate homeostasis.A) muscular B) exocrine C) nervous D) circulatory 2
Hormonal secretion is generally controlled by __________________.A) a negative feedback mechanism B) a positive feedback mechanism C) nervous impulse D) None of these is correct. 3
The chemical signals that affect the metabolism and influence the behavior of other individuals are called ____________.A) hormones B) steroids C) pheromones D) messengers 4
The gland(s) that produce steroid hormones include the __________.A) adrenal cortex B) ovaries C) testes D) All of the above 5
Antidiuretic hormone (ADH) from the posterior pituitary promotes the reabsorption of ________ in the kidneys.A) water B) salt ions C) calcium D) hydrogen ions 6
The release of oxytocin from the posterior pituitary is regulated by __________.A) a positive feedback mechanism B) the strength of uterine contractions during childbirth C) the frequency of which an infant suckles at the breast D) All of these are correct. 7
Release and release-inhibiting hormones are transported from the hypothalamus to the anterior pituitary by ______.A) nerves B) a portal system C) both A and B 8
Growth hormone (GH) promotes ______.A) skeletal and muscle growth B) protein synthesis C) fat metabolism D) All of these are correct. 9
If ________ is lacking in the diet, the thyroid enlarges, producing a goiter.A) calcium B) phosphate C) iodine 10
The hormone secreted by the thyroid gland that regulates blood calcium levels is ____________________.A) calcitonin B) epinephrine C) cortisol D) aldosterone 11
The ________ glands lie atop the kidneys.A) pituitary B) growth C) adrenal D) thyroid 12
The adrenal medulla secretes __________.A) male sex hormones B) glucocorticoids C) mineralocorticoids D) epinephrine and norepinephrine 13
Cortisol is a ______ and as such, helps to regulate energy metabolism.A) sex hormone B) glucocorticoid C) mineralocorticoid 14
The primary target organ of aldosterone is ______ where it regulates sodium and potassium balance.A) the liver B) the pancreas C) the kidneys D) all of the above 15
Low levels of adrenal cortex hormones result in ______.A) Addison disease B) Cushing syndrome C) both A and B 16
Insulin functions to ________.A) promote the storage of nutrients B) lower blood glucose C) Both A and B are correct. 17
In __________, the pancreas is not producing insulin.A) type I diabetes B) type II diabetes C) diabetes insipidus 18
The ________ are the male sex hormones.A) estrogens B) progesterones C) androgens D) A and B 19
The thymus aids the differentiation of ________.A) blood B) T lymphocytes C) basophils D) B lymphocytes 20
The ________ gland produces the hormone melatonin.A) adrenal B) thyroid C) pituitary D) pineal 21
There are _____ categories of growth factors that stimulate cell division.A) three B) four C) five D) six