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BIO 117 – EXAM 3 | 412 2026 FINAL PAPER COMPLETE QUESTIONS AND ANSWERS FULL SOLUTION

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BIO 117 – EXAM 3 | 412 2026 FINAL PAPER COMPLETE QUESTIONS AND ANSWERS FULL SOLUTION

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BIO 117 – EXAM 3 | 412 2026 FINAL PAPER
COMPLETE QUESTIONS AND ANSWERS FULL
SOLUTION

◉ LAYERS OF THE HEART.
Answer: endocardium-innermost
myocardium-middle muscle layer
epicardium-outermost


◉ CONDUCTION SYSTEM OF THE HEART.
Answer: SA node, AV node, AV Bundle, Rt & Lt Bundle branches,
Purkinje fibers


◉ ELECTROCARDIOGRAM EKG.
Answer: P wave~atrial contraction


QRS~ventricular contraction, atrial relaxation


T wave~ventricular relaxation


◉ ARTERIES.

, Answer: high pressure


◉ VEINS.
Answer: low pressure


◉ CAPILLARIES.
Answer: microscopic vessels


◉ VASOCONSTRICTION.
Answer: narrowing of a blood vessel, caused by epinephrine


◉ VASODILATION.
Answer: widening of a blood vessel


◉ AORTA.
Answer: largest artery


◉ VENAE CAVAE.
Answer: largest vein


◉ GREAT SAPHENOUS.
Answer: largest superficial vein

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