1) What is the state of the atria while the MAJORITY of ventricular filling occu
ID: 3514668 • Letter: 1
Question
1) What is the state of the atria while the MAJORITY of ventricular filling occurs?
a) The atria are in diastole.
b) The atria are in systole.
2) What action causes blood to flow from the ventricles and into the pulmonary and systemic circuits?
a) The closing of the semilunar valves
b) Contraction of the atria
c) Contraction of the ventricles
d) The closing of the mitral valves
3) Which of the following is true about the transfer of oxygen poor blood from the body (excluding the lungs) to the heart?
a) The right atrium receives oxygen poor blood from the pulmonary trunk.
b) The right atrium receives oxygen poor blood from the inferior vena cava and superior vena cava.
c) The left atrium receives oxygen poor blood from the superior vena cava only.
d) The right ventricle receives oxygen poor blood directly from the inferior vena cava only.
Explanation / Answer
1. The atria are in a phase of diastole when majority of ventricular filling is in place.
2. The ventricles are in a phase of contraction when blood enters into pulmonary and systemic circuits. During this period mitral and pulmonary valves stay opened.
3. The right atrium receives the deoxygenated blood from various body parts through superior and inferior vena cava.
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