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Exam-BIPN 100: Cardiovascular System Test Questions and Answers
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Exam-BIPN 100: Cardiovascular System Test Questionsand Answers
Arteries Correct Answer-Blood leaves heart
Veins Correct Answer-Blood to heart
Ischemia Correct Answer-Lack of oxygen in tissue due to inadequate blood pressure to
force blood into vessels
Blood Loops Correct Answer-[low O2] Right atrium->Right ventricle->Lungs [highO2] ->Left
atrium -> Left ventricle
Atrioventricular Valve Correct Answer-Right (Tricuspid)
Left (Bicuspid, Mitral)
Semilunar Valve Correct Answer-Regulate movement from ventricle to artery.
Aortic valve.
Pulmonic valve
, Exam-BIPN 100: Cardiovascular System Test Questions
and Answers
Blood Flow Correct Answer--Relaxed: Filling Phase
-Atria Contract: Blood pushed from atria to ventricle
-Ventricle Contract: When Atria relaxed, AV valve closed. Pushes blood to semilunar valve.
-Relaxed
Action potential of Cardiac Muscle Correct Answer-Early fast Na+ channels open
depolarizes.
Na+ channel inactivate cause slight dip.
Slowly developing long lasting Ca2+ channels open plateaus.
K+ channels open repolarizes.
Contraction of Cardiac Fibers Correct Answer-Action potential enters.
Voltage gated Ca2+ channels open. Ca2+ enters through DHP receptor proteins.
Calcium mediated calcium release: Ryanodine receptors open when interact with Ca2+,
allowing Ca2+ to enter cytoplasm
Calcium bind to troponin to initiate contraction.
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