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.

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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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