Leaving Certificate Biology Breathing System 1 iQuiz SECOND Press the F5 Key to Begin, Then click on this Blue Box FIRST In PowerPoint 2007 if you see a Security Warning click HERE on Options… and then click on Enable this content
The flap of tissue which covers the opening to the larynx and trachea and prevents food going ‘down the wrong way’ is called the … Epiglottis GlottisEpicotyl Epididymis
The lungs excrete … CO 2 & Salt H 2 O & SaltH 2 O & CO 2 H 2 O & Urea
Gas exchange in the lungs takes place in the … BronchiolesAlveolus NoseBlood
Which blood vessels carry deoxygenated blood towards the lungs? Pulmonary veinPulmonary artery AortaVena cava
Alveoli are surrounded by … ArteriesVeins ArteriolesCapillaries
The percentages of nitrogen, oxygen and carbon dioxide in exhaled air are respectively …
What is the correct order for the passage of air through the following structures. 1- bronchi; 2 – larynx; 3 – trachea; 4 – nasal cavity; 5 – alveoli
Which process does not occur in the nasal cavity? Trapping of foreign bodies Exchange of gases Humidification of air Warming of air
Ciliated cells are found lining the … Trachea Intercostal muscles OesophagusDiaphragm
Where is oxyhaemoglobin formed? TracheaDiaphragm LungsPleura
Which part of the breathing system is reinforced by cartilage? BronchiolesTrachea NoseAlveoli
An inflammatory condition affecting the bronchi, caused by bacteria, viruses and long-term exposure to irritants such as air pollutants and results in a build up of mucus in the bronchi is … Lung cancerAstigmatism AsthmaBronchitis
Name the substance in an inhaler, to widen the bronchioles, used by a person suffering from asthma. PenicillinBronchodilator BronchoinhalerSteroids
What is the normal rate of breathing per minute in humans? 70 – 751 – 2 16 – 1830 – 40
The ventilation centre in the brain controls the rate of breathing. In what part of the brain is it located? CerebellumMedulla oblongata CerebrumCorpus callosum
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