Riddle: I am a muscular organ that pumps blood throughout the body, located in the chest. What am I? | Card: 3 / 24 |
True or False: Veins have thicker walls than arteries because they carry blood under higher pressure. | Card: 5 / 24 |
False. Veins have thinner walls compared to arteries because the blood flows with less pressure. | Card: 6 / 24 |
Fill in the blank: The ______ carries oxygen-rich blood from the heart to different parts of the body. | Card: 7 / 24 |
Platelets help in clotting of blood, which stops bleeding when there is an injury. | Card: 12 / 24 |
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Multiple Choice: What is the primary role of the heart? A) To absorb nutrients B) To filter waste C) To pump blood D) To store oxygen | Card: 13 / 24 |
Riddle: I connect arteries to veins, my walls are extremely thin and only one cell thick. What am I? | Card: 17 / 24 |
Fill in the blank: The ______ system helps in the transportation of substances to and from various parts of the body. | Card: 23 / 24 |






