WEST COAST EMT BLOCK 4 QUIZ EXAM
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1. The systemic veins function by:
A. Delivering deoxygenated blood to the capillaries
B. Delivering oxygen-poor blood to the capillaries
C. Returning oxygen-rich blood back to the left atrium
D. Returning deoxygenated blood back to the heart
Answer D. Returning deoxygenated blood back to the heart
Explanation: The systemic veins carry deoxygenated blood from the
body's tissues and organs back to the right atrium of the heart.
2. The body's natural protective mechanisms against heat loss are:
A. Respiration and vasoconstriction
B. Vasodilation and respiration
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, C. Vasoconstriction and shivering
D. Shivering and vasodilation
Answer C. Vasoconstriction and shivering
Explanation: Vasoconstriction narrows the blood vessels, reducing
blood flow to the skin and conserving heat. Shivering generates heat
through involuntary muscle contractions.
3. In contrast to the brown recluse spider, the black widow spider:
A. Is very small and has a violin-shaped marking on its back
B. Has a bite that usually produces local pain but no systemic signs or
symptoms
C. Is large and has a red-orange hourglass mark on its abdomen
D. Has a bite that is typically painless until a blister develops
Answer C. Is large and has a red-orange hourglass mark on its
abdomen
Explanation: The black widow spider is larger than the brown recluse
and is characterized by a distinctive red-orange hourglass-shaped
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Latest Actual Questions and Verified
Answers A+ Grade
100% Guarantee Verified by Experts
1. The systemic veins function by:
A. Delivering deoxygenated blood to the capillaries
B. Delivering oxygen-poor blood to the capillaries
C. Returning oxygen-rich blood back to the left atrium
D. Returning deoxygenated blood back to the heart
Answer D. Returning deoxygenated blood back to the heart
Explanation: The systemic veins carry deoxygenated blood from the
body's tissues and organs back to the right atrium of the heart.
2. The body's natural protective mechanisms against heat loss are:
A. Respiration and vasoconstriction
B. Vasodilation and respiration
1/
11
, C. Vasoconstriction and shivering
D. Shivering and vasodilation
Answer C. Vasoconstriction and shivering
Explanation: Vasoconstriction narrows the blood vessels, reducing
blood flow to the skin and conserving heat. Shivering generates heat
through involuntary muscle contractions.
3. In contrast to the brown recluse spider, the black widow spider:
A. Is very small and has a violin-shaped marking on its back
B. Has a bite that usually produces local pain but no systemic signs or
symptoms
C. Is large and has a red-orange hourglass mark on its abdomen
D. Has a bite that is typically painless until a blister develops
Answer C. Is large and has a red-orange hourglass mark on its
abdomen
Explanation: The black widow spider is larger than the brown recluse
and is characterized by a distinctive red-orange hourglass-shaped
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