NR 507 Week 4 Midterm Exam
NR 507: Advanced Pathophysiology
Verified And Correct Answers
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,1. Question : Hemolytic disease of the newborn (HDN) can occur if the
mother:
Student Is Rh-positive and the fetus is Rh-negative
Answer:
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
Instructor HDN can occur only if antigens on fetal erythrocytes differ from antigens on
Explanation: 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.
Points Received: 2 of 2
Comments:
-589875941 MultipleChoice 68 True
0 -589875941 MultipleChoice 68
Question 2. Question : Examination of the throat in a child demonstrating signs and
symptoms of acute epiglottitis may contribute to which life-
threatening complication?
Student Retropharyngeal abscess
Answer:
Laryngospasms
Rupturing of the tonsils
Gagging induced aspiration
Instructor Examination of the throat may trigger laryngospasm and cause respiratory
Explanation: collapse. Death may occur in a few hours. This selection is the only option
that accurately identifies the life-threatening complication that can result from
an examination of the throat of a child who demonstrates the signs and
symptoms of acute epiglottitis.
Points Received: 2 of 2
Comments:
, -589875940 MultipleChoice 87 True
0 -589875940 MultipleChoice 87
Question 3. Question : If the sinoatrial (SA) node fails, then at what rate (depolarizations
per minute) can the atrioventricular (AV) node depolarize?
Student 60 to 70
Answer:
40 to 60
30 to 40
10 to 20
Instructor If the SA node is damaged, then the AV node will become the heart’s
Explanation: pacemaker at a rate of approximately 40 to 60 spontaneous depolarizations per
minute.
Points Received: 2 of 2
Comments:
-589875939 MultipleChoice 75 True
0 -589875939 MultipleChoice 75
Question 4. Question : What is the ratio of coronary capillaries to cardiac muscle cells?
Student 1:1 (one capillary per one muscle cell)
Answer:
1:2 (one capillary per two muscle cells)
1:4 (one capillary per four muscle cells)
1:10 (one capillary per ten muscle cells)
Instructor The heart has an extensive capillary network, with approximately 3300
Explanation: capillaries per square millimeter (ca/mm2) or approximately one capillary
per one muscle cell (muscle fiber).
Points Received: 2 of 2
Comments:
-589875938 MultipleChoice 73 True
0 -589875938 MultipleChoice 73
Question 5. Question : Which cytokines initiate the production of corticotropin-releasing
hormone (CRH)?
NR 507: Advanced Pathophysiology
Verified And Correct Answers
Best document for Exam
Secure Better Grades
,1. Question : Hemolytic disease of the newborn (HDN) can occur if the
mother:
Student Is Rh-positive and the fetus is Rh-negative
Answer:
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
Instructor HDN can occur only if antigens on fetal erythrocytes differ from antigens on
Explanation: 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.
Points Received: 2 of 2
Comments:
-589875941 MultipleChoice 68 True
0 -589875941 MultipleChoice 68
Question 2. Question : Examination of the throat in a child demonstrating signs and
symptoms of acute epiglottitis may contribute to which life-
threatening complication?
Student Retropharyngeal abscess
Answer:
Laryngospasms
Rupturing of the tonsils
Gagging induced aspiration
Instructor Examination of the throat may trigger laryngospasm and cause respiratory
Explanation: collapse. Death may occur in a few hours. This selection is the only option
that accurately identifies the life-threatening complication that can result from
an examination of the throat of a child who demonstrates the signs and
symptoms of acute epiglottitis.
Points Received: 2 of 2
Comments:
, -589875940 MultipleChoice 87 True
0 -589875940 MultipleChoice 87
Question 3. Question : If the sinoatrial (SA) node fails, then at what rate (depolarizations
per minute) can the atrioventricular (AV) node depolarize?
Student 60 to 70
Answer:
40 to 60
30 to 40
10 to 20
Instructor If the SA node is damaged, then the AV node will become the heart’s
Explanation: pacemaker at a rate of approximately 40 to 60 spontaneous depolarizations per
minute.
Points Received: 2 of 2
Comments:
-589875939 MultipleChoice 75 True
0 -589875939 MultipleChoice 75
Question 4. Question : What is the ratio of coronary capillaries to cardiac muscle cells?
Student 1:1 (one capillary per one muscle cell)
Answer:
1:2 (one capillary per two muscle cells)
1:4 (one capillary per four muscle cells)
1:10 (one capillary per ten muscle cells)
Instructor The heart has an extensive capillary network, with approximately 3300
Explanation: capillaries per square millimeter (ca/mm2) or approximately one capillary
per one muscle cell (muscle fiber).
Points Received: 2 of 2
Comments:
-589875938 MultipleChoice 73 True
0 -589875938 MultipleChoice 73
Question 5. Question : Which cytokines initiate the production of corticotropin-releasing
hormone (CRH)?
