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A & P II

42) Aspirin and ibuprofen block:
a) the release of arachidonic acid from the plasma membrane.
b) the action of phospholipase A1.
c) the action of phospholipase A2.
d) the action of lipoxygenase.
e) the action of cyclooxygenase.

e) the action of cyclooxygenase.

17) _______ secretion is controlled by neuroendocrine reflexes, whereas ___ secretion is controlled by negative feedback mechanisms.
a) Thyroid stimulating hormone (TSH); luteinizing hormone (LH)
b) Oxytocin (OT); antidiuretic hormone (ADH)
c) Antidiuretic hormone (ADH); oxytocin (OT)
d) Antidiuretic hormone (ADH); thyroid stimulating hormone (TSH)
e) Follicle-stimulating hormone (FSH); luteinizing hormone (LH)

Ocytocin and ADH

106) When blood glucose levels fall:
a) insulin is released.
b) peripheral cells take up less glucose.
c) protein synthesis decreases.
d) glucagon is released.
e) both B and C

d) glucagon is released.

93) The enzyme renin is responsible for the activation of:
a) adrenaline.
b) atrial natriuretic peptide.
c) cortisol.
d) erythropoietin.
e) angiotensin

e) angiotensin

118) Each of the following statements concerning the hormone atrial natriuretic peptide is true, except one. Identify the exception:

a) Atrial natriuretic peptide suppresses ADH secretion.
b) Atrial natriuretic peptide promotes sodium loss at the kidneys.
c) Atrial natriuretic peptide is produced by cells in the heart.
d) Atrial natriuretic peptide reduces the sensation of thirst.
e) Atrial natriuretic peptide increases aldosterone secretion.

E)Atrial natriuretic peptide increases aldosterone secretion.

48) Which of the following is the correct sequence of events leading to polyuria and dehydration?
a) Hyperglycemia, glucose in urine raises osmolarity of tubular fluid, glucose transport maximum exceeded, glucose enters renal tubules, osmotic diuresis.
b) hyperglycemia, glucose enters renal tubules, glucose transport maximum exceeded glucose in urine raises osmolarity of tubular fluid, osmotic diuresis
c) hyperglycemia, glucose enters renal tubules, glucose in urine raises osmolarity of tubular fluid, osmotic dieresis, glucose transport maximum exceeded
d) hyperglycemia, glucose transport maximum exceeded, glucose enters renal tubules glucose in urine raises osmolarity of tubular fluid, osmotic diuresis
e) osmotic diuresis, glucose enters renal tubules, glucose transport maximum exceeded glucose in urine raises osmolarity of tubular fluid, hyperglycemia

b) hyperglycemia, glucose enters renal tubules, glucose transport maximum exceeded glucose in urine raises osmolarity of tubular fluid, osmotic diuresis

174) A rise in angiotensin II levels would result in all of the following, except:
a) increased retention of sodium ions at the kidney.
b) increased urine production.
c) increased blood volume.
d) elevated blood pressure.
e) increased water retention.

b) increased urine production.

116) Follicle cells in the ovary produce large quantities of ________ when stimulated by FSH:
a) Gonadotropins d) inhibin
b) Progesterone e) estrogen
c) Testosterone

d) inhibin

173) A rise in cortisol would cause an increase in each of the following, except the:
a) rate of glucose synthesis by the liver.
b) fatty acid metabolism by muscle cells.
c) level of fatty acids in the blood.
d) ACTH levels.
e) rate of glycogen formation by the liver

d) ACTH levels

166) Increased levels of phosphodiesterase in target cells would decrease the activity of: (
a) progesterone.
b) FSH.
c) thyroid hormone.
d) estrogen
e) testosterone

b) FSH

185) Joe is 50 years old and has a pituitary tumor that produces excess amounts of growth hormone. Which of the following symptoms would you expect to observe as a result of this condition?
a) decreased levels of somatomedins in the blood
b) high blood levels of amino acids
c) hyperglycemia
d) decreased urine output
e) decreased triglyceride levels

b) high blood levels of amino acids

38. Cortisol:
a) inhibits fat digestion.
b) stimulates protein synthesis.
c) promotes glycogen synthesis.
d) stimulates glucose intake by most organs.
e) promotes breakdown of fat and protein.

c) promotes glycogen synthesis

54) Each of the following hormones is an amino acid derivative, except:
a) Melatonin.
b) Norepinephrine.
c) Epinephrine.
d) Thyroid-stimulating hormone.
e) Thyroid hormone.

d) Thyroid-stimulating hormone.

92) Angiotensin I is converted to angiotensin II by converting enzymes in the:
a) heart.
b) kidneys.
c) pancreas
d) liver
e) lungs

b) kidneys. (652)

189) Aldosterone secretion occurs in response to an increase in sodium content of the blood, total blood volume, and blood pressure.
a) True
b) False

b) False

79) The pituitary hormone that promotes ovarian secretion of progesterone & testicular secretion of testosterone is
a) TSH.
b) ACTH.
c) FSH.
d) LH
e) GH

d) LH

10) Thyrotropin-releasing hormone targets the:
a) thyroid gland.
b) thyroid hormone.
c) hypothalamus.
d) posterior pituitary (neurohypophysis).
e) anterior pituitary (adenohypophysis).

e) anterior pitituary (adenohypophysis)

138) The heart is known to secrete all of the following hormones, except:

a) ANP. d) renin
b) BNP. cc) thyroxine.

e) both C and D

32) ___ enters a target cell's nucleus and acts directly on the genes.
a) Insulin
b) Antidiuretic hormone (ADH)
c) Estrogen
d) Glucagon
e) Oxytocin (OT)

c) Estrogen

121) Increased numbers of red blood cells would result from increases in the hormone:
a) cortisol. d) atrial natriuretic peptide
b) thymosin. e) erythropoietin
c) aldosterone.

e) erythropoietin

170) If the median eminence of the hypothalamus is destroyed, the hypothalamus would no longer be able to control the secretion of which of the following hormones?
a) Oxytocin
b) thyroid hormone
c) ADH
d) epinephrine
e) insulin

b) thyroid hormone

71) The hormone produced by the pars intermedia of the adenohypophysis is :
a) ACTH.
b) FSH.
c) MSH.
d) ADH
e) TSH

c) MSH

66) Hormones that control the function of the anterior pituitary gland are released from the ________ of the hypothalamus:

a) median eminence
b) infundibulum
c) supraoptic nuclei
d) paraventricular nuclei
e)geniculate bodies

a) median eminence

163) Reduced fluid losses in urine due to the retention of Na+ and water is the result of the action of:
a) Oxytocin.
b) calcitonin.
c) aldosterone.
d) cortisone
e) ADH

c) aldosterone.

55) Which of the following statements concerning peptide hormones is false?

a) Prohormones can be activated before or after their release. ??
b) Peptide hormones interact with receptors on the surface of their target cells.
c) Peptide hormones remain in circulation for relatively short periods of time.
d) Peptide hormones are first synthesized as prohormones.
e) Peptide hormones are always found in the bloodstream bound to carrier proteins.

a) Prohormones can be activated before or after their release. ??
b) Peptide hormones interact with receptors on the surface of their target cells. T
c) Peptide hormones remain in circulation for relatively short periods of time. T
d) Peptide hormones are first synthesized as prohormones. t
e) Peptide hormones are always found in the bloodstream bound to carrier proteins. F (see p660, fig17.19)

181) If a person took a drug that inhibited the conversion of T4 to T3, what physiological changes would you expect to observe?
a) increased thyroxine secretion
b) decreased levels of TSH
c) increased body temperature
d) normal levels of metabolism
e) both A and D

e) both A and D

179) The condition known as seasonal affective disorder (SAD) may be caused by:
a) exposure to too much sunlight.
b) an inability to produce sufficient amounts of melanin.
c) increased levels of gonadotrophins.
d) increased levels of MSH.
e) increased levels of melatonin

e) increased levels of melatonin

47) These statements about diabetes mellitus (DM) are correct except:

a) the body produces autoantibodies that destroy the pancreatic beta cells in type I DM.
b) target cells are unresponsive to insulin in type II DM.
c) both type I and type II DM are characterized by lack of, or low levels of, insulin.
d) diabetic neuropathy is a common long term effect of DM.
e) type II DM is more common than type I DM.

c) both type I and type II DM are characterized by lack of, or low levels of, insulin.

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