1) The windpipe is also known as the ____________. a) Esophagus b) Nose c) Gullet d) Trachea 2) The waste gas is called ___________. a) oxygen b) carbon dioxide c) nitrogen 3) ___________ is when oxygen enters our nasal passage. a) Breathing b) Respiration c) Alveolus d) Energy 4) Respiration produces ____________. a) sugar b) fat c) energy d) oxygen 5) The ___________ is also known as the throat. a) Pharynx b) Larynx c) Epiglottis d) Alveoli 6) The ________________ closes the windpipe when eating. a) Alveoli b) Bronchus c) Bronchioles d) Epiglottis 7) The thoracic cavity is the empty space where you find the ______________. a) Kidneys b) Lungs c) Intestines d) Bones 8) The ribs protect the ________________. a) bladder b) intestines c) stomach d) lungs 9) Which of the following is NOT a function of the Respiratory system. a) To inhale oxygen b) To produce energy c) To produce blood d) To exchange gases 10) The tiny air sacs branching out from the bronchioles are the ______________. a) alveoli b) bronchus c) ribs d) larynx

Respiratory system

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