NR507 midterm 60 questions and answers
Question 1
pts
The lung is innervated by the parasympathetic nervous system via which
nerve?
Vagus
Phrenic
Brachial
Pectoral
Fibers of the parasympathetic division of the autonomic nervous system
(ANS) travel only in the vagus nerve to the lung.
Question 2
pts
What is the action of urodilatin?
Urodilatin causes vasoconstriction of afferent arterioles.
It causes vasodilation of the efferent arterioles.
Urodilatin inhibits antidiuretic hormone secretion.
,NR507 midterm 60 questions and answers
It inhibits salt and water reabsorption.
Urodilatin (a natriuretic peptide) inhibits sodium and water reabsorption
from the medullary part of collecting duct, thereby producing diuresis. It
is not involved in the actions described by the other options.
Question 3
pts
What is the direct action of atrial natriuretic hormone?
Sodium retention
Sodium excretion
Water retention
Water excretion
Atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) inhibit
the secretion of renin, inhibit angiotensin-induced secretion of aldosterone,
vasodilate the afferent and constrict the efferent glomerular arterioles, and
inhibit sodium and water absorption by kidney tubules. The other actions
are not a result of the atrial natriuretic hormone.
Question 4
pts
Which statement best describes a Schilling test?
,NR507 midterm 60 questions and answers
Administration of radioactive cobalamin and the measurement of its
excretion in the urine to test for vitamin B deficiency
12
Measurement of antigen-antibody immune complexes in the blood to test
for hemolytic anemia
Measurement of serum ferritin and total iron-binding capacity in the blood to
test for iron deficiency anemia
Administration of folate and measurement in 2 hours of its level in a
blood sample to test for folic acid deficiency anemia.
The Schilling test indirectly evaluates vitamin B 12 absorption by administering
radioactive B12 and measuring excretion in the urine. This selection is the
only option that accurately describes a Schilling test.
Question 5
pts
Hemolytic disease of the newborn (HDN) can occur if the mother:
Is Rh-positive and the fetus is Rh-negative
Is Rh-negative and the fetus is Rh-positive
Has type A blood and the fetus has type O
Has type AB blood and the fetus has type B
HDN can occur only if antigens on fetal erythrocytes differ from antigens
on maternal erythrocytes. Maternal-fetal incompatibility exists only if the
mother and fetus differ in ABO blood type or if the fetus is Rh-positive and
the mother is Rh-negative. This erythrocyte incompatibility does not exist
in any of the other options.
, NR507 midterm 60 questions and answers
Question 6
pts
Which T-lymphocyte phenotype is the key determinant of childhood asthma?
Cluster of differentiation (CD) 4 T-helper Th lymphocytes
1
CD4 T-helper Th lymphocytes
2
CD8 cytotoxic T lymphocytes
Memory T lymphocytes
Asthma develops because the Th2 response (in which CD4 T-helper cells
produce specific cytokines, such as interleukin [IL]–4, IL-5, and IL-13)
promotes an atopic and allergic response in the airways. This selection is
the only option that accurately identifies the appropriate T-lymphocyte
phenotype.
Question 7
pts
Perceived stress elicits an emotional, anticipatory response that begins
where?
Prefrontal cortex
Anterior pituitary
Limbic system
Question 1
pts
The lung is innervated by the parasympathetic nervous system via which
nerve?
Vagus
Phrenic
Brachial
Pectoral
Fibers of the parasympathetic division of the autonomic nervous system
(ANS) travel only in the vagus nerve to the lung.
Question 2
pts
What is the action of urodilatin?
Urodilatin causes vasoconstriction of afferent arterioles.
It causes vasodilation of the efferent arterioles.
Urodilatin inhibits antidiuretic hormone secretion.
,NR507 midterm 60 questions and answers
It inhibits salt and water reabsorption.
Urodilatin (a natriuretic peptide) inhibits sodium and water reabsorption
from the medullary part of collecting duct, thereby producing diuresis. It
is not involved in the actions described by the other options.
Question 3
pts
What is the direct action of atrial natriuretic hormone?
Sodium retention
Sodium excretion
Water retention
Water excretion
Atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) inhibit
the secretion of renin, inhibit angiotensin-induced secretion of aldosterone,
vasodilate the afferent and constrict the efferent glomerular arterioles, and
inhibit sodium and water absorption by kidney tubules. The other actions
are not a result of the atrial natriuretic hormone.
Question 4
pts
Which statement best describes a Schilling test?
,NR507 midterm 60 questions and answers
Administration of radioactive cobalamin and the measurement of its
excretion in the urine to test for vitamin B deficiency
12
Measurement of antigen-antibody immune complexes in the blood to test
for hemolytic anemia
Measurement of serum ferritin and total iron-binding capacity in the blood to
test for iron deficiency anemia
Administration of folate and measurement in 2 hours of its level in a
blood sample to test for folic acid deficiency anemia.
The Schilling test indirectly evaluates vitamin B 12 absorption by administering
radioactive B12 and measuring excretion in the urine. This selection is the
only option that accurately describes a Schilling test.
Question 5
pts
Hemolytic disease of the newborn (HDN) can occur if the mother:
Is Rh-positive and the fetus is Rh-negative
Is Rh-negative and the fetus is Rh-positive
Has type A blood and the fetus has type O
Has type AB blood and the fetus has type B
HDN can occur only if antigens on fetal erythrocytes differ from antigens
on maternal erythrocytes. Maternal-fetal incompatibility exists only if the
mother and fetus differ in ABO blood type or if the fetus is Rh-positive and
the mother is Rh-negative. This erythrocyte incompatibility does not exist
in any of the other options.
, NR507 midterm 60 questions and answers
Question 6
pts
Which T-lymphocyte phenotype is the key determinant of childhood asthma?
Cluster of differentiation (CD) 4 T-helper Th lymphocytes
1
CD4 T-helper Th lymphocytes
2
CD8 cytotoxic T lymphocytes
Memory T lymphocytes
Asthma develops because the Th2 response (in which CD4 T-helper cells
produce specific cytokines, such as interleukin [IL]–4, IL-5, and IL-13)
promotes an atopic and allergic response in the airways. This selection is
the only option that accurately identifies the appropriate T-lymphocyte
phenotype.
Question 7
pts
Perceived stress elicits an emotional, anticipatory response that begins
where?
Prefrontal cortex
Anterior pituitary
Limbic system
