NURS 251 PHARMACOLOGY MODULE EXAMS 1-6
BUNDLE | PORTAGE LEARNING VERIFIED
QUESTIONS AND ANSWERS GUIDE (2026/2027)
Question 1
,A nurse is reviewing the medical history of a patient who has been prescribed
somatropin. Which of the following conditions represents an absolute
contraindication to the initiation of this therapy?
A) Growth hormone deficiency
B) Hypothyroidism
C) Closed epiphyseal plates
D) Chronic kidney disease
VERIFIED ANSWER: C
EXPLANATION: Somatropin is a synthetic form of growth hormone that
stimulates linear bone growth. Once the epiphyseal plates (growth plates) of
the long bones have fused or closed, no further linear growth can occur.
Administering somatropin after plate closure is ineffective and can cause
severe complications like acromegaly. Options A and D are indications for
use, and Option B is managed concurrently with thyroid replacement.
Question 2
A patient presenting with acute central diabetes insipidus is prescribed
vasopressin. Which therapeutic outcome indicates to the nurse that the
medication is achieving its intended clinical effect?
A) Increased serum sodium and increased urine output
B) Decreased urine specific gravity and hypotension
C) Decreased urine output and increased urine specific gravity
D) Increased serum osmolality and peripheral edema
VERIFIED ANSWER: C
EXPLANATION: Vasopressin acts exactly like endogenous antidiuretic
hormone (ADH). It increases water reabsorption in the collecting ducts of the
kidneys. This leads to a substantial reduction in urine volume (decreased
urine output) and a higher concentration of the urine being excreted
,(increased urine specific gravity). Options A, B, and D describe untreated or
worsening conditions.
Question 3
During a review of endocrine physiology, a student asks about the structural
configuration of the pituitary gland. Which statement accurately clarifies this
concept?
A) The pituitary gland consists of three fully functioning independent lobes.
B) The pituitary gland is structurally divided into anterior and posterior lobes.
C) The central lobe produces the majority of trophic hormones.
D) The posterior lobe synthesizes its own regulatory hormones.
VERIFIED ANSWER: B
EXPLANATION: The pituitary gland is split into two major functioning
lobes: the anterior lobe (adenohypophysis) and the posterior lobe
(neurohypophysis). There is no functional "central lobe" in human
physiology, and the posterior lobe stores and releases hormones rather than
synthesizing them.
Question 4
A patient is experiencing a severe hypotensive crisis in the intensive care unit.
The provider orders an intravenous infusion of vasopressin. The nurse
understands this drug is utilized for what secondary pharmacological
mechanism?
A) Potent alpha-1 adrenergic stimulation
B) Direct smooth muscle vasoconstriction via V1 receptors
C) Beta-1 adrenergic stimulation of the myocardium
D) Blockade of calcium channels in the vasculature
VERIFIED ANSWER: B
EXPLANATION: Beyond its renal antidiuretic effects (via V2 receptors),
, vasopressin at high doses causes direct contraction of smooth muscle cells
within the vascular bed via V1 receptors. This action produces marked
vasoconstriction, making it a valuable adjunct vasopressor during shock
states.
Question 5
When analyzing the hypothalamic-pituitary axis feedback loop, what response
occurs when the serum levels of target organ hormones (such as T3 and T4) rise
significantly?
A) The hypothalamus increases production of releasing hormones.
B) The anterior pituitary increases secretion of tropic hormones.
C) The anterior pituitary inhibits the secretion of tropic hormones.
D) The target organ initiates a positive feedback cascade.
VERIFIED ANSWER: C
EXPLANATION: The endocrine system operates primarily on negative
feedback loops. When circulating levels of a final target hormone rise, those
molecules interact with receptors on the hypothalamus and anterior pituitary
gland to turn off or inhibit further secretion of releasing and tropic
hormones, preventing overproduction.
Question 6
A pediatric patient with growth failure is being evaluated for growth hormone
therapy. The nurse knows that somatropin is contraindicated in patients with
which of the following active conditions?
A) Controlled epilepsy
B) Intracranial tumor or active malignancy
C) Inactive pituitary microadenoma
D) Severe asthma
VERIFIED ANSWER: B
BUNDLE | PORTAGE LEARNING VERIFIED
QUESTIONS AND ANSWERS GUIDE (2026/2027)
Question 1
,A nurse is reviewing the medical history of a patient who has been prescribed
somatropin. Which of the following conditions represents an absolute
contraindication to the initiation of this therapy?
A) Growth hormone deficiency
B) Hypothyroidism
C) Closed epiphyseal plates
D) Chronic kidney disease
VERIFIED ANSWER: C
EXPLANATION: Somatropin is a synthetic form of growth hormone that
stimulates linear bone growth. Once the epiphyseal plates (growth plates) of
the long bones have fused or closed, no further linear growth can occur.
Administering somatropin after plate closure is ineffective and can cause
severe complications like acromegaly. Options A and D are indications for
use, and Option B is managed concurrently with thyroid replacement.
Question 2
A patient presenting with acute central diabetes insipidus is prescribed
vasopressin. Which therapeutic outcome indicates to the nurse that the
medication is achieving its intended clinical effect?
A) Increased serum sodium and increased urine output
B) Decreased urine specific gravity and hypotension
C) Decreased urine output and increased urine specific gravity
D) Increased serum osmolality and peripheral edema
VERIFIED ANSWER: C
EXPLANATION: Vasopressin acts exactly like endogenous antidiuretic
hormone (ADH). It increases water reabsorption in the collecting ducts of the
kidneys. This leads to a substantial reduction in urine volume (decreased
urine output) and a higher concentration of the urine being excreted
,(increased urine specific gravity). Options A, B, and D describe untreated or
worsening conditions.
Question 3
During a review of endocrine physiology, a student asks about the structural
configuration of the pituitary gland. Which statement accurately clarifies this
concept?
A) The pituitary gland consists of three fully functioning independent lobes.
B) The pituitary gland is structurally divided into anterior and posterior lobes.
C) The central lobe produces the majority of trophic hormones.
D) The posterior lobe synthesizes its own regulatory hormones.
VERIFIED ANSWER: B
EXPLANATION: The pituitary gland is split into two major functioning
lobes: the anterior lobe (adenohypophysis) and the posterior lobe
(neurohypophysis). There is no functional "central lobe" in human
physiology, and the posterior lobe stores and releases hormones rather than
synthesizing them.
Question 4
A patient is experiencing a severe hypotensive crisis in the intensive care unit.
The provider orders an intravenous infusion of vasopressin. The nurse
understands this drug is utilized for what secondary pharmacological
mechanism?
A) Potent alpha-1 adrenergic stimulation
B) Direct smooth muscle vasoconstriction via V1 receptors
C) Beta-1 adrenergic stimulation of the myocardium
D) Blockade of calcium channels in the vasculature
VERIFIED ANSWER: B
EXPLANATION: Beyond its renal antidiuretic effects (via V2 receptors),
, vasopressin at high doses causes direct contraction of smooth muscle cells
within the vascular bed via V1 receptors. This action produces marked
vasoconstriction, making it a valuable adjunct vasopressor during shock
states.
Question 5
When analyzing the hypothalamic-pituitary axis feedback loop, what response
occurs when the serum levels of target organ hormones (such as T3 and T4) rise
significantly?
A) The hypothalamus increases production of releasing hormones.
B) The anterior pituitary increases secretion of tropic hormones.
C) The anterior pituitary inhibits the secretion of tropic hormones.
D) The target organ initiates a positive feedback cascade.
VERIFIED ANSWER: C
EXPLANATION: The endocrine system operates primarily on negative
feedback loops. When circulating levels of a final target hormone rise, those
molecules interact with receptors on the hypothalamus and anterior pituitary
gland to turn off or inhibit further secretion of releasing and tropic
hormones, preventing overproduction.
Question 6
A pediatric patient with growth failure is being evaluated for growth hormone
therapy. The nurse knows that somatropin is contraindicated in patients with
which of the following active conditions?
A) Controlled epilepsy
B) Intracranial tumor or active malignancy
C) Inactive pituitary microadenoma
D) Severe asthma
VERIFIED ANSWER: B
