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Multiple Choice
Which of the following is the correct sequence of blood flow in birds and mammals?
A
Left atrium → Left ventricle → Lungs → Right atrium → Right ventricle → Body
B
Right atrium → Right ventricle → Lungs → Left atrium → Left ventricle → Body
C
Left ventricle → Left atrium → Lungs → Right ventricle → Right atrium → Body
D
Right ventricle → Right atrium → Lungs → Left ventricle → Left atrium → Body
Verified step by step guidance
1
Understand the basic anatomy of the heart in birds and mammals, which consists of four chambers: two atria and two ventricles.
Recognize that the heart functions to pump blood through two circuits: the pulmonary circuit (to the lungs) and the systemic circuit (to the rest of the body).
Identify the sequence of blood flow starting from the right atrium, where deoxygenated blood enters the heart from the body.
Follow the path of blood from the right atrium to the right ventricle, which then pumps the blood to the lungs for oxygenation.
Trace the oxygenated blood from the lungs to the left atrium, then to the left ventricle, which pumps it out to the body, completing the systemic circuit.