Nutrition, breathing and circulation
Our body needs nutrients and oxygen to live and grow. We obtain nutrients from food, and oxygen from the air. In our body, the digestive system gives us the nutrients that we need, and the respiratory system obtains oxygen from the air. Nutrients are combined with oxygen to give us energy. During these processes, we accumulate waste products. The urinary system expels these waste products. [...]
Esta secuencia contiene:
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13 actividades
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90 recursos
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Idioma:
- Inglés
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Formato:
Interactivo
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Secuencia didáctica
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Didactic objectives Understand the functions of food and recognise how it differs from nutrients. Classify common foods in the six major food groups. Identify the different parts of the digestive system and describe their role in digestion. [...]
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1. Nutrition. Food and nutrients Food enters our body through the digestive system. Food gives us energy to grow and repair our body if we are ill or hurt. We obtain important substances from food to make our body function properly. [...]
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Our body needs nutrients and oxygen to live and grow. We obtain nutrients from food, and oxygen from the air. In our body, the digestive system gives us the nutrients that we need, and the respiratory system obtains oxygen from the air. [...]
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Food Food enters our body through the digestive system. Food is important because: It gives us energy to do our daily activities. We need energy to grow, and to repair our body if we are ill or hurt. [...]
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The digestive system is the group of organs that digest food, absorb nutrients and expel undigested waste. It contains the alimentary canal and the digestive glands. [...]
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The mouth The mouth is the opening to the alimentary canal. We use our jaw to open and close our mouth. The inside of the mouth is made up of: Our teeth, which we use to chew our food. [...]
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The respiratory system The respiratory system is the group of organs through which we are able to inhale oxygen, and exhale carbon dioxide. [...]
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Exchange of gases in our lungs Our body exchanges oxygen for carbon dioxide inside the pulmonary alveoli. Each alveolus is connected to a network of very small blood vessels, called capillaries. [...]
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The circulatory system The circulatory system has two very important functions: It transports nutrients and oxygen to all the cells in our body. It collects the waste products that the cells produce. [...]
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The heart The heart is the organ that pumps blood to all the cells in our body. It is about the size of a closed fist. Its walls are made of muscle tissue. The heart contains four chambers: The two top chambers are called atria. [...]
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The urinary system The urinary system is the group of organs that expels waste products from our body. The blood collects these waste products from the cells. [...]
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Our body needs nutrients and oxygen to live and grow. We obtain nutrients from food, and oxygen from the air. In our body, the digestive system gives us the nutrients that we need, and the respiratory system obtains oxygen from the air. [...]
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Our body needs nutrients and oxygen to live and grow. We obtain nutrients from food, and oxygen from the air. In our body, the digestive system gives us the nutrients that we need, and the respiratory system obtains oxygen from the air. [...]
Cursos y asignaturas
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