Chapter 22- Respiratory System Flashcards

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1
Q

Nasal cavity

A

Hair and mucus filter air, thin layer of blood vessels warms it

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2
Q

Pharynx

A

Connection between nasal and oral cavity, uvula closes off nasal cavity when swallowing, ear canal entrance location

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3
Q

Larynx

A

“Voice box” vocal cords, Adam’s apple, epiglottis

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4
Q

Trachea

A

“Wind pipe” air transport, cartilage formed into C shapes to keep trachea open

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5
Q

Bronchi

A

Branch from trachea into two parts (one for each lung)

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6
Q

Bronchioles

A

Smaller air conducting passages

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7
Q

Alveoli

A

Tiny air sacs surrounded by capillaries, area of gas exchange

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8
Q

Why is there a size difference between the left and right lung?

A

The left lung which has two lobes, compared to the right lung, which has three lobes, sits directly in front of the heart

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9
Q

Diaphragm

A

Muscle that lungs rest on

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10
Q

Intercostal muscles

A

Muscles between the ribs

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11
Q

What happens when inhaling?

A

Intercostal muscles and diaphragm contract, lung volume increases, pressure decreases

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12
Q

What happens when exhaling?

A

Intercostal muscles and diaphragm relax, lung volume decreases, and pressure increases

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13
Q

What is the point of the respiratory system?

A

To gain useable energy and to get rid of carbon dioxide

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