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10 questions
Diagram shows a model of human respiratory system. K represents....
lung
rib cage
diaphragm
thoracic cavity
Epiglottis is the structure that opens or closes the trachea.
TRUE
FALSE
Exchange of gases in the body cells occurs in the bronchioles.
TRUE
FALSE
What is X?
Trachea
Bronchus
Bronchiole
Epiglottis
Which is the correct air passage in the breathing mechanism?
Nostril, nasal cavity, pharynx, larynx, trachea, bronchus, bronchiole, alveolus
Nostril, nasal cavity, larynx, pharynx, trachea, bronchus, bronchiole, alveolus
Nostril, nasal cavity, pharynx, larynx, trachea, bronchiole, bronchus, alveolus
Nostril, nasal cavity, trachea, larynx, pharynx, bronchus, bronchiole, alveolus
Name structure Y.
Trachea
Bronchus
Bronchiole
Alveolus
Which of the structures of human respiratory system NOT involve in the air passage in the breathing mechanism?
Trachea
Intercostal muscle
Rib
Larynx
During inhalation....
intercostal muscles contract
air pressure in the thoracic cavity to decrease
rib cage moves downwards and inwards
diaphragm muscles relax and curve upwards
diaphragm muscles contract
During exhalation....
intercostal muscles contract
air pressure in the thoracic cavity to decrease
rib cage moves downwards and inwards
diaphragm muscles relax and curve upwards
intercostal muscles relax
"Movements of the rib cage and diaphragm make the thoracic cavity smaller and cause the air pressure in the thoracic cavity to increase"
The situation happens during....
inhalation
exhalation
excretion
blood circulation
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