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1.The water inside the jar
It represents the blood. Our blood is a speciliazed body fluid that has four main components:
The key functions of our blood are:
2. The human heart and the heart pump model
The activity shows the main function of the heart. The human heart is represented by the jar, the water acts as the blood while the straws acts as the vein and the artery. The pan represents the other body parts where the blood is distributed. The balloon pumps the water into the straw and into the jar then to the pan. In a similar manner, the blood is pumped into the veins then into the heart. The heart pumps the blood through the arteries then to any parts of the body.
3. The heart as a pump
The heart rhythm or contraction causes the blood to continuously flow to the heart, lungs and body to distribute oxygen and nutrients to the body cells.
4. The model if the straw is blocked
No. The main purpose of the straw is similar to the vein and artery in the heart. As the blood circulates passing through the veins and into the heart, it pumps blood outside from the heart passing through the artery. If the vein or the artery is blocked, it cannot perform its function, thus a blood clot or cardiac arrest might occur.
You can read more topic about the heart in this link:
https://brainly.ph/question/682663
For more information about the blood, check out this link:
https://brainly.ph/question/1802787
To know more about how the blood is pumped to the heart:
https://brainly.ph/question/2245206