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Quiz about Take a Deep Breath and Have a Go

Take a Deep Breath and Have a Go Quiz

A quiz about the human respiratory system.

A multiple-choice quiz by jamesf. Estimated time: 5 mins.

Author
jamesf

Time
5 mins

Type
Multiple Choice

Quiz #
263,653

Updated
Dec 03 21

# Qns
10

Difficulty
Tough

Avg Score
5 / 10

Plays
4708

Awards
Top 5% quiz!

One at a Time - Single Page - Timed Game

Question 1 of 10

1. In the lungs, oxygen is absorbed into the blood. In which part of the lungs does this mainly happen? Hint

trachea

bronchioles

alveoli

bronchi

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Question 2 of 10

2. What name is given to the maximum volume of air that can be breathed in or out of the lungs in one breath? Hint

tidal volume

residual capacity

inspiratory reserve volume

vital capacity

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Question 3 of 10

3. Many of the airways in the lungs have goblet cells in their walls. What do these do? Hint

digest foreign particles

move bacteria away from the lungs

secrete mucus

absorb oxygen

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Question 4 of 10

4. What muscular movements cause air to be drawn into the lungs? Hint

diaphragm and external intercostal muscles relax

diaphragm and external intercostal muscles contract

diaphragm relaxes and external intercostal muscles contract

diaphragm contracts and external intercostal muscles relax

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Question 5 of 10

5. Which blood vessels carry deoxygenated blood towards the lungs? Hint

pulmonary veins

venae cavae

aorta

pulmonary arteries

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Question 6 of 10

6. What is the function of surfactant in the lungs? Hint

to destroy micro-organisms that may be breathed in

to prevent the alveoli collapsing

to release carbon dioxide into the air

to create a large surface area inside the lungs

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Question 7 of 10

7. Some of the airways are reinforced by cartilage, and this helps to keep the airways open. Which airways are reinforced in this way? Hint

bronchi and alveoli

trachea and bronchi

trachea and alveoli

bronchioles and diaphragm

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Question 8 of 10

8. What is the correct description of the epithelium of the alveoli? Hint

squamous

pseudostratified

columnar

ciliated

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Question 9 of 10

9. Smokers may develop a condition known as emphysema. What is this? Hint

a type of lung cancer

an infection of the pleural membranes

an infection of the bronchial tree

breakdown of the alveolar walls

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Question 10 of 10

10. Cystic fibrosis is an inherited lung disorder, where the sufferer is unable to transport ions across cell membranes. Which ions cannot be transported? Hint

hydrogencarbonate

sodium

chloride

potassium

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Quiz Answer Key and Fun Facts

1. In the lungs, oxygen is absorbed into the blood. In which part of the lungs does this mainly happen?

Answer: alveoli

The lungs contain around 700 million alveoli, with a total surface area of about 70 square metres.

2. What name is given to the maximum volume of air that can be breathed in or out of the lungs in one breath?

Answer: vital capacity

Tidal volume is the volume a (normal) breath. Residual capacity is the volume of air left in the lungs after breathing out as much as one can. Inspiratory reserve volume is the extra air that could still be breathed in after a normal inspiration.

3. Many of the airways in the lungs have goblet cells in their walls. What do these do?

Answer: secrete mucus

The goblet cells secrete mucus to trap bacteria and dust that may be breathed in. The mucus is then moved up, away from the lungs, by cilia.

4. What muscular movements cause air to be drawn into the lungs?

Answer: diaphragm and external intercostal muscles contract

Contraction of these muscles causes expansion of the thorax (chest), due to the ribs being raised and the diaphragm moving down. This expansion of the thorax causes a reduction of pressure, allowing air to enter.

5. Which blood vessels carry deoxygenated blood towards the lungs?

Answer: pulmonary arteries

The pulmonary arteries bring deoxygenated blood to the lungs from the right ventricle of the heart. Then the pulmonary veins return the oxygenated blood to the left atrium.

6. What is the function of surfactant in the lungs?

Answer: to prevent the alveoli collapsing

The surfactant is a detergent, which lowers the surface tension of the moisture on the surface of the alveoli, preventing the alveoli sticking together.

7. Some of the airways are reinforced by cartilage, and this helps to keep the airways open. Which airways are reinforced in this way?

Answer: trachea and bronchi

Only the larger airways are reinforced in this way - the trachea (windpipe), bronchi and the larger bronchioles.

8. What is the correct description of the epithelium of the alveoli?

Answer: squamous

The alveolar wall is very thin, for efficient exchange of gases. It is a squamous (or "pavement") epithelium, which means that the cells are broader than they are tall.

9. Smokers may develop a condition known as emphysema. What is this?

Answer: breakdown of the alveolar walls

In this form of emphysema, inhalation of cigarette smoke stimulates production of excess elastase, an enzyme that breaks down the elastic material in the walls of the alveoli. The resulting reduction of the surface area of the alveoli means that the lungs are unable to absorb sufficient oxygen.

10. Cystic fibrosis is an inherited lung disorder, where the sufferer is unable to transport ions across cell membranes. Which ions cannot be transported?

Answer: chloride

Inability to transport chloride ions out from the epithelial cells results in an excessively sticky mucus, which blocks the lungs.

Source: Author jamesf

This quiz was reviewed by FunTrivia editor crisw before going online.
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