questions biology class 8 ICSE questions biology class 8 ICSE questions biology
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1. a. Aorta
b. Left pulmonary veins
2. The mitral valve is located in the left side of the heart, between the left atrium and left ventricle.
3.The SA node (called the pacemaker of the heart) sends out an electrical impulse. The upper heart chambers (atria) contract. The AV node sends an impulse into the ventricles.
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Answered by
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Answer:
1. a. Aorta
b. Left pulmonary veins
2. The mitral valve is located in the left side of the heart, between the left atrium and left ventricle.
3.The SA node (called the pacemaker of the heart) sends out an electrical impulse. The upper heart chambers (atria) contract. The AV node sends an impulse into the ventricles.
Explanation:
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