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Respiratory System

Anatomy MCQs: Lungs

Paired organs that draw in air and trade oxygen for carbon dioxide across a vast, delicate surface.

5 questions

Lungs

The essentials

Function
Exchanges oxygen for carbon dioxide
Location
Either side of the heart, within the ribcage

The questions

  1. What is the ridge where the trachea forks into the two main bronchi called?

    1. Bronchiole
    2. Alveolus
    3. Carina
    4. Pleura
    Show the answer

    Answer: Carina

    The carina marks the split point at the base of the trachea.

  2. How do the lungs' lobe counts compare?

    1. Equal, two each
    2. Right has three, left has two
    3. Right has two, left has three
    4. Right has one, left has three
    Show the answer

    Answer: Right has three, left has two

    The left lung gives up a lobe's worth of room for the heart's cardiac notch.

  3. What thin coating keeps the smallest alveoli from collapsing?

    1. Mucus
    2. Surfactant
    3. Pleural fluid
    4. Cartilage
    Show the answer

    Answer: Surfactant

    Surfactant is a detergent-like film that lowers surface tension inside the tiny air sacs.

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The same organ in 3D, to turn and dissect, with a score at the end.

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2 more questions in this set

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