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Science Affairs Biology

The heat pumps blood to the pulmonary and aortic arches. For this to happen, the four chambers of the heart have to contract in a definite sequence. What is the sequence in which the contraction takes place?

1. Left ventricle

2. Right auricle

3. Right ventricle

4. Left auricle

2, 4, 3, 1

1, 3, 2, 4

1, 4, 3, 2

4, 2, 3, 1

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Explanation:

The heat pumps blood to the pulmonary and aortic arches. For this to happen, the four chambers of the heart have to contract in a definite sequence. The correct sequence in which the contraction takes place is:
Right auricle- Left auricle- Right ventricle- Left ventricle