Saltar navegación

Activa JavaScript para disfrutar de los vídeos de la Mediateca.

PRIMARY - 6 - NUTRITION BODY SYSTEMS. FORMACIÓN.mp4

Ajuste de pantalla

El ajuste de pantalla se aprecia al ver el vídeo en pantalla completa. Elige la presentación que más te guste:

Subido el 4 de abril de 2019 por Cp santodomingo algete

22 visualizaciones

Más información Transcripción

Descargar la transcripción

Nutrition is the function that we need to get energy for the body. 00:00:00
You can get that energy from food. 00:00:06
Having a varied diet helps you to be healthy. 00:00:09
The vitamins and nutrients from food are processed by your digestive system and absorbed by your circulatory system. 00:00:12
What you don't need is expelled by the excretory system. 00:00:21
Here are the main parts of the digestive system. 00:00:25
The nose, mouth, salivary glands, esophagus, stomach, pancreas, liver, small intestine, large intestine, rectum, and the anus. 00:00:28
There are five steps to digestion. The first starts with the nose and the mouth. 00:00:57
The second with the esophagus. The third with the stomach. The fourth, the small intestine. 00:01:06
And finally, the fifth, the large intestine. In the first step of digestion, the sense of smell 00:01:16
triggers the production of saliva in your salivary glands. You can see here that the 00:01:24
salivary glands are connected to your nasal cavity. Then the saliva helps your teeth to 00:01:31
crush food before we chew it. In the mouth, the tongue makes a ball with the food. This ball is 00:01:38
called the bullous. We then swallow the bullous through the esophagus. The esophagus is a stretchy 00:01:47
tube that connects the back of the throat with the stomach. The muscles of the esophagus squeeze 00:01:55
the food down to the stomach. The stomach breaks down the food using its strong muscular wall 00:02:01
and gastric juices. The gastric juices mix with the bolus to kill dangerous bacteria. 00:02:09
When food leaves the stomach, it has been transformed into a liquid. The liquid food 00:02:18
arrives to the small intestine and mixes with bile and the pancreatic juices. There, proteins, 00:02:27
carbohydrates, vitamins, minerals, and fats are separated. The nutrients pass through the wall 00:02:35
of the small intestine and they are absorbed into the blood. The waste, which is what the body does 00:02:43
not need, passes to the large intestine. There, water is absorbed into the blood and the solid 00:02:51
waste leaves the body through the rectum and the anus. The circulatory system delivers blood 00:02:59
through blood vessels to different tissues in the body. At the center of your circulatory system 00:03:08
is the heart. The heart is a powerful organ that beats every second. It beats faster when we do 00:03:15
exercise because our body needs more oxygen. It is made by a special type of muscle that never 00:03:23
gets tired. We can find four chambers in the heart. The top two chambers are called the right 00:03:31
in the left atrium and the bottom ones are called the right and left ventricles. They are separated 00:03:39
by valves which prevent blood from flowing backwards. The heart sends oxygen and nutrient 00:03:46
rich blood to the body. Here we can see the different parts of the heart. Here is the superior 00:03:53
vena cava, the aorta, the pulmonary artery, the right atrium, the left atrium, the 00:04:02
right ventricle, the left ventricle, and the inferior vena cava. Inside of your 00:04:18
circulatory system is blood. Blood is a warm mixture of liquid and cells. The 00:04:30
The different cells carry oxygen and fight germs. 00:04:37
The liquid carries nutrients to body cells and takes away waste. 00:04:41
Your blood flows in your blood vessels every second of the day. 00:04:47
It can flow quick in arteries and slower in your veins. 00:04:51
Let's take a closer look inside of a blood cell. 00:04:56
If we were to look at it underneath a microscope, we would be able to see the different parts. 00:05:00
There are three different types of blood vessels. 00:05:06
There are arteries, veins, and capillaries. 00:05:10
Inside of these blood vessels, there is plasma, which is a yellow liquid that carries nutrients and waste products. 00:05:15
The red blood cells carry oxygen and carbon dioxide. 00:05:23
The white blood cells surround and absorb germs to fight infection. 00:05:29
The platelets are what joins together to stop bleeding when we're losing blood because of a cut. 00:05:36
Let's talk about the three different types of blood vessels. 00:05:46
The arteries carry oxygenated blood from the heart to the rest of the body. 00:05:50
The veins carry blood that contain carbon dioxide back to the heart. 00:05:58
And the capillaries are the tiniest blood vessels. 00:06:04
They connect the arteries and the veins. 00:06:10
Gases and nutrients can pass through their thin walls. 00:06:14
How does circulation work? 00:06:19
The first step is the deoxygenated blood from your body 00:06:21
passes from the right atrium to the right ventricle inside of your heart. 00:06:25
Then it leaves the heart through the pulmonary artery to go to the lungs. 00:06:31
The second step, blood releases carbon dioxide and takes oxygen in through the lungs when we breathe. 00:06:37
And then it returns to the heart through the pulmonary veins. 00:06:45
Next, the oxygenated blood flows to the left atrium and the left ventricle in the heart 00:06:52
to be pumped to the rest of the body through the aorta. 00:07:00
The aorta is the biggest artery in the body. 00:07:04
The aorta carries blood to small arteries and then to capillaries throughout the body. 00:07:11
It is in the capillaries where blood exchanges with oxygen and nutrients to carbon dioxide and 00:07:17
waste. The deoxygenated blood passes from capillaries to veins and finally to the superior 00:07:25
vena cava and the inferior vena cava. Blood is carried by these veins to the heart where the 00:07:35
process starts again. Let's review the steps of circulation. The first step, the deoxygenated blood 00:07:46
passes from the right atrium to the right ventricle. It leaves the heart through the 00:07:59
pulmonary artery to go to the lungs. Second step, blood releases carbon dioxide and takes oxygen 00:08:05
in the lungs. Then it returns to the heart through the pulmonary veins. 00:08:15
Third, the oxygenated blood flows to the left atrium and the left ventricle to be pumped to 00:08:23
the rest of the body through the aorta. The aorta is the biggest artery in the body. 00:08:31
Fourth step, the aorta carries blood to small arteries and then to capillaries. 00:08:39
It is in the capillaries where blood exchanges oxygen and nutrients to carbon dioxide and waste. 00:08:50
Fifth, the deoxygenated blood passes from capillaries to veins and finally to the superior 00:08:59
vena cava and the inferior vena cava. Blood is carried by these veins to the heart where the 00:09:10
process starts again. The respiratory system. The cells in our body cannot survive without oxygen. 00:09:19
During the process of respiration, oxygen is combined with nutrients to produce energy. 00:09:30
In that process, our cells produce carbon dioxide that is expelled from the body. 00:09:38
The main parts of the respiratory system are the trachea, the bronchus, the lungs, the diaphragm, bronchioles, alveoli. 00:09:45
The trachea carries air in and out when you breathe. 00:10:10
The bronchus branches from your trachea into your lungs. 00:10:15
The bronchioles are smaller branches from your bronchus. 00:10:19
The alveoli carry out the exchange of gases of carbon dioxide and oxygen. 00:10:27
Let's talk about the steps of respiration. 00:10:35
The first step, air enters through the nose and the mouth. 00:10:41
Second, air passes down through the larynx and then to the trachea. 00:10:46
Third, the bronchus are subdivided into bronchioles to connect the trachea to the lungs. 00:10:56
Fourth, at the end of each bronchiole, we find the alveoli, where the exchange of gas takes place. 00:11:07
Here, oxygen passes from the alveoli and lungs to capillaries into the blood. 00:11:15
At that time, carbon dioxide leaves blood and enters the alveoli. 00:11:24
The air goes through the bronchioles and bronchus to the trachea. 00:11:29
It finally leaves the body through the mouth and the nose. 00:11:34
What happens when we breathe? 00:11:40
Let's talk about inhalation and exhalation. 00:11:42
When we take a breath, our diaphragm contracts and allows the lungs to inflate. 00:11:46
The ribs expand to make more room for the air. 00:11:53
Exhalation. 00:11:59
When we breathe out or exhale, our ribs relax and move back. 00:12:00
The diaphragm relaxes, pushing carbon dioxide out of the lungs through the trachea, nose, and the mouth. 00:12:07
The excretory system excretes waste from the body. 00:12:18
Our body excretes carbon dioxide, urine, and water. 00:12:26
This system is made up by urinary system and the sweat glands. 00:12:32
So here's the urinary system, and here are the sweat glands. 00:12:38
The urinary system helps us get rid of waste from the blood. 00:12:44
It produces and expels 1.4 liters of urine each day. 00:12:49
We also eliminate water through the skin. 00:12:58
The sweat glands help us to cool down by excreting sweat 00:13:01
Sweat is a mixture of water and minerals 00:13:06
It leaves the body through our pores 00:13:10
Here are the renal arteries 00:13:13
They carry blood to the kidneys 00:13:18
The kidneys 00:13:21
They clean your blood and filter your waste 00:13:24
Your readers 00:13:28
They carry urine from kidneys to the bladder 00:13:31
The bladder stores urine and releases it when it's convenient. 00:13:35
Your urethra, it helps the bladder to be emptied. 00:13:45
Autor/es:
CEIPS SANTO DOMINGO
Subido por:
Cp santodomingo algete
Licencia:
Reconocimiento - Compartir igual
Visualizaciones:
22
Fecha:
4 de abril de 2019 - 13:58
Visibilidad:
Público
Centro:
CP INF-PRI SANTO DOMINGO
Duración:
13′ 51″
Relación de aspecto:
0.75:1
Resolución:
768x1024 píxeles
Tamaño:
77.15 MBytes

Del mismo autor…

Ver más del mismo centro

EducaMadrid, Plataforma Educativa de la Comunidad de Madrid

Plataforma Educativa EducaMadrid