ExpertEasy1 markMultiple Choice
AQA GCSE · Question 02 · The Human Body and Movement in Physical Activity and Sport
Which one of these is the correct pathway of the blood in the cardiac cycle as it returns to the heart from the vena cava?
Which one of these is the correct pathway of the blood in the cardiac cycle as it returns to the heart from the vena cava?
Answer options:
A.
Left atrium – right atrium – right ventricle – left ventricle
B.
Left ventricle – left atrium – right ventricle – right atrium
C.
Right atrium – right ventricle – left atrium – left ventricle
D.
Right ventricle – right atrium – left ventricle – left atrium
How to approach this question
Recall the four chambers of the heart and the path blood takes through them. Remember that deoxygenated blood from the body (via the vena cava) enters the right side of the heart first.
Full Answer
C.Right atrium – right ventricle – left atrium – left ventricle✓ Correct
The cardiac cycle describes the flow of blood through the heart. Deoxygenated blood returns from the body via the vena cava and enters the right atrium. It then passes through the tricuspid valve into the right ventricle. From the right ventricle, it is pumped to the lungs. Oxygenated blood returns from the lungs to the left atrium, passes through the bicuspid (mitral) valve into the left ventricle, and is then pumped to the rest of the body. The sequence in option C correctly follows this path through the chambers.
Common mistakes
Confusing the left and right sides of the heart, or the order of atria and ventricles.
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