1.1 The human respiratory system

1 Respiration 1.1 The human respiratory system Exercise 1 Parts of the respiratory system This exercise gives you practice in naming and spelling the parts of the respiratory system. The diagram shows the head and chest cavity of a person. SAMPLE

Choose the word or phrase that matches each description. Choose from the list. Copy the words carefully – do not make any spelling mistakes! air sac bronchus bronchioles cartilage larynx respiratory system trachea vocal cords a all the organs that work together to help oxygen to get into the body: ………………………………… b the tube that takes air from the back of the mouth down into the chest; it is sometimes called the windpipe ………………………………… c one of two tubes that branches from the trachea ………………………………… d an organ at the top of the trachea, which contains the vocal cords; it is sometimes called the voicebox ………………………………… e a tiny, air-filled space inside the lungs ………………………………… f the trachea is surrounded by rings of this, to support it ………………………………… g bands of muscle that stretch across the larynx; they vibrate to make sounds ………………………………… h tubes that carry air from a bronchus to the air sacs in the lungs ………………………………… SAMPLE

Exercise 2 True or false?

This exercise gives you practice in writing positive and negative sentences, as well as checking your understanding of the respiratory system. If the statement is true, tick (✓) it. If the statement is false, draw a cross (✗). Then correct the statement by writing a positive or negative sentence. For example: The heart is part of the respiratory system. ✗ The heart is not part of the respiratory system. a Respiration is a chemical reaction that happens in every living cell. ………………………………………………………………………………………. b Aerobic respiration does not use oxygen. ………………………………………………………………………………………. c The vocal cords are inside the bronchus. ………………………………………………………………………………………. d The plural of bronchus is bronchioles. ………………………………………………………………………………………. e The lungs do not contain air sacs. ………………………………………………………………………………………. SAMPLE