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What are the parts of Respiratory System?

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Lung and parts of respiratory system

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biology science respiratory system year 8 Edad recomendada: 12 años
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Rupa Oberoi
Rupa Oberoi
Australia

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What are the parts of Respiratory System?

Lung and parts of respiratory system

Rupa Oberoi
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alveoli bronchioles larynx sounds cartilage ribs protective mouth pharynx lungs cilia tissues bronchi system epiglottis esophagus digestive cilia dust diaphragm trachea bronchial thorax nose pleura

Air enters the respiratory system through the or the . Tiny hairs called protect the nasal passageways and other parts of the respiratory tract , filtering out and other particles that enter the nose through the breathed air .
The two openings of the airway meet at the or throat , at the back of the nose and mouth . The pharynx is part of the as well as the respiratory system because it carries both food and air . At the bottom of the pharynx , this pathway divides in two , one for food ? the which leads to the stomach ? and the other for air . The is a small flap of tissue , covers the air only passage when we swallow , keeping food and liquid from going into the .
The is the top part of the air - only pipe . This short tube contains a pair of vocal cords , which vibrate to make .
The , is the continuation of the airway below the larynx . The walls of the trachea are strengthened by stiff rings of to keep it open . The trachea is also lined with , which sweep fluids and foreign particles out of the airway so that they stay out of the lungs .
At its bottom end , the trachea divides into left and right air tubes called , which connect to the lungs . Within the lungs , the bronchi branch into smaller bronchi and even smaller tubes called that end in tiny air sacs called , where the exchange of oxygen and carbon dioxide actually takes place . Each person has hundreds of millions of alveoli in their lungs . This network of alveoli , bronchioles , and bronchi is known as the tree .
The lungs also contain elastic that allow them to inflate and deflate without losing shape . They're covered by a thin lining called the .
The chest cavity , or is the airtight box that houses the bronchial tree , lungs , heart , and other structures . The top and sides of the thorax are formed by the and attached muscles , and the bottom is formed by a large muscle called the . The chest walls form a cage around the lungs and other contents of the chest cavity .

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