breathing system Flashcards

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1
Q

what is the movement of air in and out of the lungs called

A

ventilation

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2
Q

where is the respiratory system located

A

thoracic cavity

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3
Q

draw + label a diagram of the human breathing system

A
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4
Q

what’s the function of the epiglottis

A

prevents food entry into the trachea

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5
Q

what’s the funtion of the larynx

A

contains vocal chords for speech

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6
Q

outline the process of inhalation

A

brain sends impulse to muscles, intercostal muscles and diaghram contract, ribcage moves up and out, thoracic volume increases as pressure drops, air moves in

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7
Q

outline the process of exhalation

A

intercostal muscles and diaghram relax, ribcage moves back, thoracic volume decreases as pressure rises, air forced out

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8
Q

what is located at the end of the breathing tract responisble for gaseous exchange

A

alveoli

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9
Q

what gas controls the rate of breathin

A

co2

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10
Q

give three reasons as to how alveoli are adapted for efficient gas exchange

A

numerous, large surface area, one cell thick

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11
Q

give a breathing disorder + a cause + a treatment

A

asthma- allergens/dust/pet dander, inhalers

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