GUJARAT NURSING COUNCIL PAPER 2019. QUE 1.đŸ”¸ (a) Explain the gross structure of the 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 females. The