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GNC BIO SCIENCEDate: 22/04/2024 Q-1.a. Explain the gross structure of Heart. -Explain the gross structure of heart. 03 marks. Heart.. Heart is an important organ of the circulatory system. Heart beats continuously during human life. Due to its pulsation, the blood circulates continuously in the blood vessels. The heart is an organ made up of blood and muscles. It weighs approximately 310 grams in males and approximately 250 grams in