NR 507 MIDTERM EXAM QUESTIONS AND CORRECT ANSWERS
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)?
Student IL–1 and IL-6
Answer:
IL-2 and TNF-α
IFN and IL-12
TNF-ß and IL-4
Instructor Although a number of stress factors initiate the production of CRH, of the
Explanation: options available, only high levels of IL-1 and IL-6 initiate such a response.
Points Received: 2 of 2
Comments:
-589875937 MultipleChoice 21 True
0 -589875937 MultipleChoice 21
Question 6. Question :
What process allows the kidney to respond to an increase in
workload?
Student Glomerular filtration
Answer:
Secretion of 1,25-dihydroxyvitamin D3
, Increased heart rate
Compensatory hypertrophy
Instructor Compensatory hypertrophy allows the kidney to respond to an increase in
Explanation: workload throughout life. The remaining options are not relevant to
accommodating an increased workload.
Points Received: 2 of 2
Comments:
-589875936 MultipleChoice 108 True
0 -589875936 MultipleChoice 108
Question 7. Question :
Which type of antibody is involved in type I hypersensitivity
reaction?
Student IgA
Answer:
IgE
IgG
IgM
Instructor Type I reactions are only mediated by antigen-specific IgE and the products
Explanation: of tissue mast cells (see Figure 9-1).
Points Received: 2 of 2
Comments:
-589875935 MultipleChoice 9 True
0 -589875935 MultipleChoice 9
Question 8. Question :
Causes of hyperkalemia include:
Student Hyperparathyroidism and malnutrition
Answer:
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)?
Student IL–1 and IL-6
Answer:
IL-2 and TNF-α
IFN and IL-12
TNF-ß and IL-4
Instructor Although a number of stress factors initiate the production of CRH, of the
Explanation: options available, only high levels of IL-1 and IL-6 initiate such a response.
Points Received: 2 of 2
Comments:
-589875937 MultipleChoice 21 True
0 -589875937 MultipleChoice 21
Question 6. Question :
What process allows the kidney to respond to an increase in
workload?
Student Glomerular filtration
Answer:
Secretion of 1,25-dihydroxyvitamin D3
, Increased heart rate
Compensatory hypertrophy
Instructor Compensatory hypertrophy allows the kidney to respond to an increase in
Explanation: workload throughout life. The remaining options are not relevant to
accommodating an increased workload.
Points Received: 2 of 2
Comments:
-589875936 MultipleChoice 108 True
0 -589875936 MultipleChoice 108
Question 7. Question :
Which type of antibody is involved in type I hypersensitivity
reaction?
Student IgA
Answer:
IgE
IgG
IgM
Instructor Type I reactions are only mediated by antigen-specific IgE and the products
Explanation: of tissue mast cells (see Figure 9-1).
Points Received: 2 of 2
Comments:
-589875935 MultipleChoice 9 True
0 -589875935 MultipleChoice 9
Question 8. Question :
Causes of hyperkalemia include:
Student Hyperparathyroidism and malnutrition
Answer:
