Page | 1
Irene Gold Boards Part 1 -
Physiology Questions with Detailed
Verified Answers
Deoxygenated blood from the upper extremity goes to the: Ans:
Superior Vena Cava
Deoxygenated blood from the lumbar goes to the: Ans: Azygous
vein then SVC
Deoxygenated blood from the lower extremity goes to the: Ans:
IVC
Isovolumeric relaxation= Ans: Blood flowing into the atria
Isovolumeric contraction= Ans: Blood is in the ventricles, valves are
closed, builds pressure in the ventricles
How much of blood passively flows from atrium to ventricle? Ans:
80%
How much of blood is actively pushed through the atrium to
ventricle via atrial contraction? Ans: 20%
What signals the atria to contract? Ans: SA node
What is the pace maker of the heart? Ans: SA node
Pulmonary arteries transport what kind of blood to the lungs? Ans:
Deoxygenated
, Page | 2
Blood is oxygenated in the lungs due to what? Ans: Bohr Effect
Pulmonary veins carry what kind of blood from the lungs to the left
atrium? Ans: Oxygenated
What is stroke volume? Ans: (End diastolic) - (end systolic)
What is cardiac output? Ans: Stroke volume x heart rate
Diastole= Ans: Relaxation
Systole= Ans: Contraction
What is the 1st heart sound? Ans: Closing of AV valves (tricuspid
and bicuspid) —Lub
What is the 2nd heart sound? Ans: Closing of semilunar valves
(pulmonic and aortic) — Dub
What is the 3rd heart sound? Ans: Ventricular gallop
What heart sound may indicate early signs of CHF in adults, but is
normal in children and athletes? Ans: 3rd
What is the 4th heart sound? Ans: Atrial gallop (cardiac
pathology)
What happens during depolarization of the heart? Ans: Sodium
rapidly rushes into the cell
What happens during the plateau phase of the cardiac action
potential? Ans: Calcium slowly flows into the cell
Irene Gold Boards Part 1 -
Physiology Questions with Detailed
Verified Answers
Deoxygenated blood from the upper extremity goes to the: Ans:
Superior Vena Cava
Deoxygenated blood from the lumbar goes to the: Ans: Azygous
vein then SVC
Deoxygenated blood from the lower extremity goes to the: Ans:
IVC
Isovolumeric relaxation= Ans: Blood flowing into the atria
Isovolumeric contraction= Ans: Blood is in the ventricles, valves are
closed, builds pressure in the ventricles
How much of blood passively flows from atrium to ventricle? Ans:
80%
How much of blood is actively pushed through the atrium to
ventricle via atrial contraction? Ans: 20%
What signals the atria to contract? Ans: SA node
What is the pace maker of the heart? Ans: SA node
Pulmonary arteries transport what kind of blood to the lungs? Ans:
Deoxygenated
, Page | 2
Blood is oxygenated in the lungs due to what? Ans: Bohr Effect
Pulmonary veins carry what kind of blood from the lungs to the left
atrium? Ans: Oxygenated
What is stroke volume? Ans: (End diastolic) - (end systolic)
What is cardiac output? Ans: Stroke volume x heart rate
Diastole= Ans: Relaxation
Systole= Ans: Contraction
What is the 1st heart sound? Ans: Closing of AV valves (tricuspid
and bicuspid) —Lub
What is the 2nd heart sound? Ans: Closing of semilunar valves
(pulmonic and aortic) — Dub
What is the 3rd heart sound? Ans: Ventricular gallop
What heart sound may indicate early signs of CHF in adults, but is
normal in children and athletes? Ans: 3rd
What is the 4th heart sound? Ans: Atrial gallop (cardiac
pathology)
What happens during depolarization of the heart? Ans: Sodium
rapidly rushes into the cell
What happens during the plateau phase of the cardiac action
potential? Ans: Calcium slowly flows into the cell
