Just Breathe: A Respiratory System Quiz
by Staff
Made up of airways, lungs, muscles, and blood vessels, your respiratory system is the mechanism that lets you breathe. How much do you know about the respiratory system?

This covers your windpipe when you swallow.

  • diaphragm
  • epiglottis
  • cilia

The lungs and the windpipe were important symbols in this ancient culture:

  • Greece
  • Rome
  • Egypt

The main muscle(s) you use to breathe is the:

  • intercostal muscle
  • diaphragm
  • abdominal muscle

Which one of your lungs is slightly smaller than the other?

  • the left
  • the right
  • They are both the same size.

At rest, you exhale this amount of water per hour:

  • 10.5 milliliters
  • 5.5 milliliters
  • 17.5 milliliters

This lines your air passages to keep your lungs clean.

  • mucus
  • cilia
  • alveoli

Between the 1930s and 1950s, doctors believe this respiratory illness was purely psychological.

  • rhinitis
  • laryngitis
  • asthma

This animal can only breathe through its nose.

  • horse
  • pig
  • mouse

Alveoli are an important part of the respiratory system. How many alveoli do you have?

  • 4,000
  • 1 billion
  • 300 million

Your lungs breathe in at least how many gallons of air a day?

  • 500
  • 1,000
  • 2,000

An infection in your bronchial tubes is called:

  • bronchitis
  • pneumonia
  • asthma

As your cells use oxygen, your blood carries this back to your lungs:

  • carbon monoxide
  • carbon dioxide
  • nitrogen

The lungs are the only organs in the body that can float, because of your:

  • bronchi
  • capillaries
  • alveoli

The lungs are divided into sections called lobes. How many lobes, in total, do your lungs have?

  • five
  • six
  • four

This is a bacterial infection that attacks the lungs.

  • bronchitis
  • tuberculosis
  • chronic obstructive pulmonary disease

This common respiratory disease is marked by symptoms like wheezing, coughing, and chest tightness.

  • asthma
  • allergies
  • emphysema

This progressive disease prevents proper airflow in and out of your lungs.

  • bronchiectasis
  • asthma
  • COPD

The body's biggest user of oxygen is the:

  • lungs
  • brain
  • heart

How many people are diagnosed with lung cancer per year?

  • 1.4 million
  • 55,0000
  • 2 million

This keeps air passages moist and prevents irritants like dust from entering the lungs.

  • cilia
  • mucus
  • alveoli