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„Serce pompuje — krew wędruje” to piosenka o układzie krążenia człowieka, pracy serca i nieustannym przepływie krwi przez organizm. Utwór pokazuje, jak serce działa jak pompa, jak krew płynie przez tętnice, żyły i naczynia włosowate oraz jak tlen i składniki odżywcze trafiają do komórek.
Original explanations based on the cited sources.
In humans, the heart pumps blood through vessels to the lungs and the rest of the body. Blood carries oxygen, nutrients and waste products, among other substances.
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Oxygen is a chemical element with the symbol O. In air it mainly occurs as O₂ gas, which our cells use in cellular respiration.
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2:25What makes your pulse speed up after a few easy jumps? This upbeat science song shows how the heart squeezes, relaxes, and pumps blood carrying oxygen picked up in the lungs. Children can explore their heartbeat, gently find a wrist pulse with two fingers, and notice it slow again while resting.
2:55Ola and her dog discover why it feels cooler beneath a tree and how trees support people, animals, and the neighborhood. This cheerful children’s song also introduces leaves, oxygen, roots, and rain while showing that a sapling needs the right place, regular care, and time to grow.
3:17How does a waterfall begin, and why does its edge slowly move? This song shows gravity pulling river water over a rocky ledge, while the current carries sand and pebbles that wear away softer rock over a long time. It’s one common way waterfalls form.
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