Q132. What percentage of dietary iron is typically absorbed?
Anonymous Quiz
3%
A) 1%
93%
B) 5-10%
5%
C) 50%
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Q133. Iron absorption is INCREASED by the presence of:
Anonymous Quiz
3%
A) Phytate
91%
B) Ascorbic acid (Vitamin C)
7%
C) Iron overload
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Q134. Most of the body's iron (~65%) is found in:
Anonymous Quiz
37%
A) Ferritin
36%
B) Myoglobin
28%
C) Hemoglobin
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Q135. Transferrin is the protein responsible for:
Anonymous Quiz
1%
A) Storing iron
97%
B) Transporting iron in the blood
2%
C) Oxygen transport
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Q136. Which lab test is the best indicator of body iron stores?
Anonymous Quiz
7%
A) Serum iron
86%
B) Serum ferritin
7%
C) TIBC
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Q137. In the progression of iron deficiency, what happens to Transferrin and TIBC?
Anonymous Quiz
2%
A) Both decrease
13%
B) Both increase
85%
C) Transferrin increases, TIBC decreases
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Q138. A common cause of iron deficiency in adults is:
Anonymous Quiz
3%
A) High dietary intake
95%
B) Blood loss (GI or menstrual)
2%
C) High vitamin C intake
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Q139. The treatment for life-threatening iron poisoning is:
Anonymous Quiz
2%
A) Rasburicase
98%
B) Desferrioxamine (chelating agent)
0%
C) Vitamin K
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Q140. Hemochromatosis is a condition of iron overload characterized by:
Anonymous Quiz
4%
A) Low TIBC saturation
95%
B) High TIBC saturation (>60%)
1%
C) High iron excretion
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Q142. The middle, muscular layer of the heart wall is the:
Anonymous Quiz
6%
A) Epicardium
81%
B) Myocardium
13%
C) Endocardium
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Q143. Worldwide, the leading cause of death is:
Anonymous Quiz
4%
A) Cancer
6%
B) Infectious diseases
90%
C) Cardiovascular disease (CVD)
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Q144. Which of the following is a modifiable (lifestyle) risk factor for CVD?
Anonymous Quiz
5%
A) Age
49%
B) Family history
47%
) Smoking
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Q145. In which type of countries is the incidence of Coronary Heart Disease (CHD) currently INCREASING?
Anonymous Quiz
10%
A) High-income countries
80%
B) Low/middle-income countries
10%
C) All countries equally
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Q146. Ischemic Heart Disease (IHD) is primarily caused by:
Anonymous Quiz
1%
A) Excessive blood flow
98%
B) Insufficient blood supply to the heart
1%
C) High oxygen levels
Q147. Ischemia differs from hypoxemia in that ischemia involves:
Anonymous Quiz
17%
A) Reduced oxygen only
79%
B) Reduced blood flow
4%
C) Increased glucose
❤2
Q148. In the Left Ventricle, blood flow occurs ONLY during:
Anonymous Quiz
10%
A) Systole
61%
B) Diastole
29%
C) Tachycardia
❤2
Q150. Atherosclerosis is characterized by the accumulation of _____ in arterial walls.
Anonymous Quiz
3%
A) Proteins
74%
B) Lipids
23%
C) Carbohydrates
❤4
Q151. Symptoms of exertional angina usually appear when arterial stenosis reaches:
Anonymous Quiz
4%
A) 10%
45%
B) 30%
51%
C) 70%
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Q152. Grade III arterial stenosis is defined as a narrowing of:
Anonymous Quiz
6%
A) 25%
44%
B) 50%
50%
C) 75%
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