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Digestive system - Contenido educativo

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Subido el 22 de enero de 2024 por Alba P.

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Hello, today we are going to study the digestive system. 00:00:00

First we have to know what is the function of the system in our body. 00:00:06

Well, the digestive system breaks down the food into nutrients that can be absorbed 00:00:10

and that can be transformed into energy in our bodies. 00:00:16

It also takes the water that the body needs. 00:00:20

Here we have a picture of the digestive system where we are going to study the process of digestion. 00:00:25

First, the food is taken by the mouth. 00:00:31

And inside the mouth, this food is grinded by the teeth 00:00:34

and also mixed with the saliva, which is produced by the salivary glands. 00:00:39

So with this process we are going to form the bolus. 00:00:45

The bolus is swallowed and it travels through the pharynx and the esophagus in order to get the stomach. 00:00:48

The stomach secretes the gastric juices, which breaks down this food and transforms the bolus into a substance called chyme. 00:00:56

The chyme travels again to the small intestine, where it's mixed with the intestinal juices. 00:01:05

The intestinal juices are formed by two different substances. 00:01:12

The first one is the pancreatic juice, which is formed in the pancreas. 00:01:17

And the other one is the bile, which is formed in the liver. 00:01:22

So these two substances are mixed with the chyme and the chyme is transformed into chyle. 00:01:26

It's different. The chyle, which was created in the stomach, and now we are going to form in the small intestine the chyle. 00:01:35

Once the chyle is formed, the nutrients are absorbed by the blood capillaries of the small intestine 00:01:44

and they can travel to the whole body through the blood. 00:01:50

But there is another process. 00:01:54

The water and the substances that cannot be digested travel to the large intestine. 00:01:57

And in the large intestine, this water is absorbed, because we have to use the water, 00:02:05

and the substances which cannot be digested are transformed into feces. 00:02:10

The feces are going to leave the body through the anus, because they cannot be used. 00:02:17

So this is the whole process. 00:02:25

There is another thing that you have to know, and it's that once the nutrients are absorbed in the small intestine, 00:02:27

the blood travels to the liver, and in the liver it's cleaned again. 00:02:33

Once this blood is cleaned with the nutrients, then it can travel to the whole body. 00:02:40

This is everything, and I see you in the next presentation. Bye! 00:02:47

Idioma/s:
Autor/es:: Alba Pallín
Subido por:: Alba P.
Licencia:: Reconocimiento
Visualizaciones:: 72
Fecha:: 22 de enero de 2024 - 20:11
Visibilidad:: Público
Centro:: CP INF-PRI ANTONIO OSUNA
Descripción ampliada:: Vídeo resumen del funcionamiento del aparato digestivo. Contenido de 5º y 6º de primaria en el área de Natural Science.
Duración:: 02′ 54″
Relación de aspecto:: 1.78:1
Resolución:: 1920x1080 píxeles
Tamaño:: 31.71 MBytes