Exam-BIPN 100: Cardiovascular System Test Questions and Answers

Exam-BIPN 100: Cardiovascular System Test Questions
and 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.