3/20/25, 7:37 WGU D115 Unit 5 Flashcards |
AM
WGU D115 UNIT 5 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
VERIFIED LATEST UPDATE
Terms in this set (124)
Which two processes are involved in Adhesion & Aggregation (2 & 3)
platelet activation?
Platelet activation involves three linked processes: (1) adhesion, (2) activation, and (3)
1. Cyclooxygenase-1 (COX-1) aggregation. Platelet activation stimuli include epinephrine, thrombin, and collagen.
inactivation
2.Aggregation
3.Adhesion
Select four common causes of anemia from D. Impaired production of erythrocytes,
the list below. A. increased red cell destruction,
C. severe bleeding, and
A. Increased red cell destruction
B. chronic blood loss can cause anemia.
B.Chronic blood loss
C. Severe bleeding
D.Impaired erythrocyte production
E. Blood transfusion
Pernicious anemia is caused by vitamin B12 deficiency, which is often associated with
the end stage of type A chronic atrophic (autoimmune) gastritis. Autoimmune
Describe what causes pernicious anemia. gastritis impairs the production of IF, which is required for vitamin B12 uptake from
the gut.
Select three possible causes of ABC
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lymphadenopathy from the options below.
There are multiple causes of lymphadenopathy. It may be caused by C: neoplastic
A. Inflammatory condition disease, so all lymphadenopathies must be closely followed and evaluated.
B.Lipid storage disease Lymphadenopathy may also be caused by an immunologic or A: inflammatory
condition and by B: lipid storage disease; this type of lymphadenopathy is usually
C. Neoplastic disease
widespread, including the liver and spleen.
D.Cardiac disease
E. Peripheral vascular dysfunction
What is the most common cause of iron 1. Insufficient dietary iron is the most common cause of IDA in children during the
deficiency anemia (IDA) in children during first few years of life.
the first few years of life?
1. Dietary insufficiencies
2.Absorption problems
3. Blood loss
4. Increased iron requirement
Which stressor triggers sickling? Low temperature causes vasoconstriction, slowing blood flow, leading to RBC
deoxygenation, which triggers sickling.
1. Increased plasma volume
2.Increased oxygen tension of the blood
3.Decreased plasma osmolality
4. Low temperature
What is a function of the pericardial sac? 2. The pericardial sac provides a physical barrier that protects the heart against
infection and inflammation. It also protects the heart during gravitational
acceleration and deceleration.
1. It provides protection to heart
valves and heart chambers.
2.It provides a physical barrier that
protects the heart against infection
and inflammation.
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3.It forms a lining that is continuous with
the arteries, veins, and capillaries of the
body.
4. It creates a continuous closed circulatory
system.
Which factors determine cardiac output? 2. Cardiac output is the product of heart rate multiplied by stroke volume.
1. Parasympathetic and sympathetic
activity
2.Heart rate and stroke volume
3.Right and left atrial pressure
Which three enzymes are released when 2, 3 &4
the myocardial muscle is damaged? Creatine phosphokinase-myocardial band (CPK-MB) and lactic acid dehydrogenase
1. Lactic acid dehydrogenase (LDH) (LDH) are biomarkers released by damaged myocardial cells. Cardiac troponin I
(cTnI) is the most specific indicator of myocardial infarction.
2.Creatine phosphokinase-myocardial
band (CPK-MB)
3.Cardiac troponin I (cTnI)
4. Low-density lipoprotein (LDL)
5.Aspartate aminotransferase (AST)
HTN is a risk factor for coronary It also increases afterload and causes ventricular hypertrophy, both of which
atherosclerosis. What does it do to increase myocardial oxygen demand.
afterload?
Systolic heart failure is reduced contractility of the myocardium so that the heart is
Describe systolic heart failure. unable to produce enough cardiac output to meet the oxygen demands of body
cells.
What does systolic HF do to ejection ejection fraction would be decreased below 40% because her stroke volume is
fraction? decreased (reduced contractility) and her LVEDV is increased.
3/27
AM
WGU D115 UNIT 5 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
VERIFIED LATEST UPDATE
Terms in this set (124)
Which two processes are involved in Adhesion & Aggregation (2 & 3)
platelet activation?
Platelet activation involves three linked processes: (1) adhesion, (2) activation, and (3)
1. Cyclooxygenase-1 (COX-1) aggregation. Platelet activation stimuli include epinephrine, thrombin, and collagen.
inactivation
2.Aggregation
3.Adhesion
Select four common causes of anemia from D. Impaired production of erythrocytes,
the list below. A. increased red cell destruction,
C. severe bleeding, and
A. Increased red cell destruction
B. chronic blood loss can cause anemia.
B.Chronic blood loss
C. Severe bleeding
D.Impaired erythrocyte production
E. Blood transfusion
Pernicious anemia is caused by vitamin B12 deficiency, which is often associated with
the end stage of type A chronic atrophic (autoimmune) gastritis. Autoimmune
Describe what causes pernicious anemia. gastritis impairs the production of IF, which is required for vitamin B12 uptake from
the gut.
Select three possible causes of ABC
1/27
,3/20/25, 7:37 WGU D115 Unit 5 Flashcards |
AM
lymphadenopathy from the options below.
There are multiple causes of lymphadenopathy. It may be caused by C: neoplastic
A. Inflammatory condition disease, so all lymphadenopathies must be closely followed and evaluated.
B.Lipid storage disease Lymphadenopathy may also be caused by an immunologic or A: inflammatory
condition and by B: lipid storage disease; this type of lymphadenopathy is usually
C. Neoplastic disease
widespread, including the liver and spleen.
D.Cardiac disease
E. Peripheral vascular dysfunction
What is the most common cause of iron 1. Insufficient dietary iron is the most common cause of IDA in children during the
deficiency anemia (IDA) in children during first few years of life.
the first few years of life?
1. Dietary insufficiencies
2.Absorption problems
3. Blood loss
4. Increased iron requirement
Which stressor triggers sickling? Low temperature causes vasoconstriction, slowing blood flow, leading to RBC
deoxygenation, which triggers sickling.
1. Increased plasma volume
2.Increased oxygen tension of the blood
3.Decreased plasma osmolality
4. Low temperature
What is a function of the pericardial sac? 2. The pericardial sac provides a physical barrier that protects the heart against
infection and inflammation. It also protects the heart during gravitational
acceleration and deceleration.
1. It provides protection to heart
valves and heart chambers.
2.It provides a physical barrier that
protects the heart against infection
and inflammation.
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, 3/20/25, 7:37 WGU D115 Unit 5 Flashcards |
AM
3.It forms a lining that is continuous with
the arteries, veins, and capillaries of the
body.
4. It creates a continuous closed circulatory
system.
Which factors determine cardiac output? 2. Cardiac output is the product of heart rate multiplied by stroke volume.
1. Parasympathetic and sympathetic
activity
2.Heart rate and stroke volume
3.Right and left atrial pressure
Which three enzymes are released when 2, 3 &4
the myocardial muscle is damaged? Creatine phosphokinase-myocardial band (CPK-MB) and lactic acid dehydrogenase
1. Lactic acid dehydrogenase (LDH) (LDH) are biomarkers released by damaged myocardial cells. Cardiac troponin I
(cTnI) is the most specific indicator of myocardial infarction.
2.Creatine phosphokinase-myocardial
band (CPK-MB)
3.Cardiac troponin I (cTnI)
4. Low-density lipoprotein (LDL)
5.Aspartate aminotransferase (AST)
HTN is a risk factor for coronary It also increases afterload and causes ventricular hypertrophy, both of which
atherosclerosis. What does it do to increase myocardial oxygen demand.
afterload?
Systolic heart failure is reduced contractility of the myocardium so that the heart is
Describe systolic heart failure. unable to produce enough cardiac output to meet the oxygen demands of body
cells.
What does systolic HF do to ejection ejection fraction would be decreased below 40% because her stroke volume is
fraction? decreased (reduced contractility) and her LVEDV is increased.
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