Natural Sciences T4 DIET AND DIGESTION PARTE II tercero de primaria - Contenido educativo
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Maya nos explica DIET AND DIGESTION (tema 4) para tercero de primaria del colegio San Pablo
Our digestive and excretory systems.
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Why do we eat and drink?
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Why do we go to the toilet?
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Read and think.
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One, read and answer.
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What happens to food in each parts of the digestive system?
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B, what is the most important part of the excretory system?
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Our digestive system helps us to get the nutrients we need from food.
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1. The mouth has teeth that break the food into small pieces and a tongue that mixes the food with saliva so it's easy to swallow.
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2. The esophagus is a long tube. Food goes down here to the stomach.
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3. The stomach is like a bag. The food stays here for about three hours.
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Gastric juices break down the food even more and turn it into a thick liquid.
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The thick liquid leaves the stomach and goes into the small intestine.
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Four, the small intestine is a very long, thin tube.
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There are lots of blood vessels around the tube.
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The thick liquid from the stomach goes through here and the nutrients pass into the blood.
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Five, the large intestine is a wide tube.
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It connects to the anus. What our body doesn't need goes along here and out through the anus
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when we go to the toilet. Our excretory system helps our bodies to get rid of excess water and
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waste products. One, the blood goes through the kidneys. The kidneys remove excess water and waste
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products from the blood and turns them into urine. Two, the ureters are long tubes where the urine
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goes down to the bladder. Three, the bladder is like a bag. It collects the urine. When it is
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full, it sends messages to our brain. It is time to go to the toilet. Four, the urethra is a short
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tube. Urine goes down here and leaves our body when we go to the toilet.
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- Idioma/s:
- Autor/es:
- Beatriz
- Subido por:
- Beatriz C.
- Licencia:
- Reconocimiento - No comercial
- Visualizaciones:
- 75
- Fecha:
- 19 de marzo de 2020 - 0:43
- Visibilidad:
- Clave
- Centro:
- CP INF-PRI SAN PABLO
- Duración:
- 02′ 14″
- Relación de aspecto:
- 16:9 Es el estándar usado por la televisión de alta definición y en varias pantallas, es ancho y normalmente se le suele llamar panorámico o widescreen, aunque todas las relaciones (a excepción de la 1:1) son widescreen. El ángulo de la diagonal es de 29,36°.
- Resolución:
- 848x480 píxeles
- Tamaño:
- 23.89 MBytes