Avsnitt 26
Ja, vad är en cell?
The world of cells is incredible! Activating enzymes, stopping viruses, and managing the body’s police force: it’s all in a day’s work for Teacher.
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After the first cell is fertilized, division and diversification take place to create the 60 trillion cells of the human body.
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The body’s police force is taught to neutralize its enemies (microbes and viruses), which reproduce at an alarming rate! It’s a very complex task.
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Pedrito cuts his finger with a dirty knife. While the platelets try to cure the wound, the white blood cells fight off the filthy invaders.
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The body’s messengers run around sending and receiving information about feelings like hunger and cold. They work day and night and never take breaks.
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Yum! Candy! But sugar strengthens the bacteria around the gums and attacks the tooth enamel, which can cause cavities.
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After a tasty meal the food starts its journey to the stomach where it will be broken down depending on what properties it has. But don’t overdo it!
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The huge lymph network transports everything to the body’s factories. Infectious intruders beware! This place is well protected.
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Muscles account for almost half the weight of the human body. They also need a ton of energy to do their jobs correctly.
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Combat teams act as preventative barriers and are prepared to defend the cell’s nucleus against toxic gases and contaminants.
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Vaccines bring us so many benefits! People who don’t get vaccinated run the risk of contracting a disease that is stronger than our natural defenses.
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A walk in the forest is the perfect way to learn about the extraordinary food chain that exists between the sun, vegetation, animals, and man.
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Pedrito is 8 years old and is tired after a long day. When he goes to bed, Teacher and his helpers observe the activity that continues during sleep.
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Pedrito wants to know why his grandpa can’t play ball anymore, so he tells Pedrito an old story about a sphinx.
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