Biology Quiz: Take The Respiratory System Trivia Questions!
The respiratory system is a biological system made up of specific organs used for gas exchange in animals and plants. The anatomy and physiology that make this system vary greatly. It depends on the size of the organism, the environment in which it lives, and it’s evolutionary history. Designed to pull oxygen from the air through the lungs, it enters the bloodstream and expels carbon dioxide. Take a deep breath and take the quiz.
- 1.
The functions of the respiratory system are?
- A.
Extract oxygen form the atmosphere
- B.
Excrete water and Co2
- C.
Maintain pH levels of the blood
- D.
Ventilate the lungs
- E.
Keep the heart beating
Correct Answer(s)
A. Extract oxygen form the atmosphere
B. Excrete water and Co2
C. Maintain pH levels of the blood
D. Ventilate the lungs -
- 2.
Inspired air contains approximately?
- A.
78% nitrogen
- B.
21% oxygen
- C.
0.04% C02
- D.
1% inert gases
- E.
Water vapour (variable)
- F.
16% oxygen
- G.
4% Co2
Correct Answer(s)
A. 78% nitrogen
B. 21% oxygen
C. 0.04% C02
D. 1% inert gases
E. Water vapour (variable) -
- 3.
Expired air contains approximately?
- A.
79% nitrogen
- B.
16% oxygen
- C.
4% C02
- D.
1% inert gases
- E.
Water vapour (variable)
- F.
20% oxygen
- G.
0.04% C02
Correct Answer(s)
A. 79% nitrogen
B. 16% oxygen
C. 4% C02
D. 1% inert gases
E. Water vapour (variable) -
- 4.
All of the following make up the respiratory tract except?
- A.
Diaphragm
- B.
Nose
- C.
Pharynx
- D.
Larynx
- E.
Trachea
- F.
Bronchi
- G.
Bronchioles
- H.
Alveolar ducts
- I.
Alveoli
Correct Answer
A. Diaphragm -
- 5.
The larynx is protected by the epiglottis that shuts when food or fluids are being swallowed and opens for breathing. Does this mechanism still work in a unconscious patient?
- A.
No
- B.
Yes
Correct Answer
A. No -
- 6.
Which lung has 3 lobes?
- A.
The right
- B.
The left
Correct Answer
A. The right -
- 7.
Which network surrounds the alveoli?
- A.
Capillaries
- B.
Lungs
- C.
Nerves
- D.
Blood
Correct Answer
A. Capillaries -
- 8.
An exchange of gases happens in 2 places?
- A.
True
- B.
False
Correct Answer
A. True -
- 9.
The average resp rate of a adult at rest is between?
- A.
10 to 20
- B.
12 to 25
- C.
15 to 30
- D.
30 to 40
Correct Answer
A. 10 to 20 -
- 10.
Respiratory compromise can be categorised in to?
- A.
Obstruction of air passages
- B.
Chest and lung trauma
- C.
Paralysis
- D.
Deoxygenated atmosphere
- E.
Lung disease and illness
- F.
Heart attack
Correct Answer(s)
A. Obstruction of air passages
B. Chest and lung trauma
C. Paralysis
D. Deoxygenated atmosphere
E. Lung disease and illness -
- 11.
Respiratory conditions cause hypoxia in three ways?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
1.Airway obstruction 2.Impaired perfusion of the alveoliRate this question:
-
- 12.
Water vapour is expired from the lungs?
- A.
True
- B.
False
Correct Answer
A. True -
- 13.
The nose contains ciliated columnar epithelium?
- A.
True
- B.
False
Correct Answer
B. False -
- 14.
The cricoid ring is incomplete posteriorly?
- A.
True
- B.
False
Correct Answer
B. False -
- 15.
The alveoli walls are classed as semi–permeable membrane?
- A.
True
- B.
False
Correct Answer
A. True -
- 16.
The pharynx plays a part in the sense of taste?
- A.
True
- B.
False
Correct Answer
A. True -
- 17.
The trachea is composed of c-shaped cartilage?
- A.
True
- B.
False
Correct Answer
A. True -
- 18.
The trachea is composed of approx how many pieces of C shape cartilage?
- A.
16 to 20
- B.
12 to 15
- C.
10 to 25
- D.
25 to 30
Correct Answer
A. 16 to 20 -
- 19.
The pharynx is approximately how long?
- A.
13 cm
- B.
14 cm
- C.
15 cm
- D.
16 cm
- E.
17 cm
Correct Answer
A. 13 cm -
- 20.
Air exchange within the alveoli takes place by?
- A.
Diffusion
- B.
Transfusion
Correct Answer
A. Diffusion -
- 21.
Hypercarbia means lack of carbon dioxide in the blood?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The physical condition of having the presence of an abnormally high level of carbon dioxide in the circulating blood.Rate this question:
-
- 22.
The trachea of an average sized adult is?
- A.
10 - 12 cm long
- B.
16 - 18 cm long
- C.
20 - 22 cm long
- D.
24 - 28 cm long
Correct Answer
A. 10 - 12 cm long -
- 23.
In the lungs there are approximately how many alveoli?
- A.
300 million
- B.
100 million
- C.
200 million
- D.
400 million
- E.
500 million
Correct Answer
A. 300 million -
- 24.
Pulmonary ventilation is which law?
- A.
Boyles Law
- B.
Dalton's Law
Correct Answer
A. Boyles Law -
- 25.
How many litres of air can the lungs hold?
- A.
6 litres
- B.
5.3 litres
- C.
3.5 litres
- D.
3 litres
- E.
2 litres
Correct Answer
A. 6 litres -
- 26.
How many ml of oxygen do the lungs use?
- A.
500ml
- B.
750ml
- C.
2500ml
- D.
205ml
- E.
250ml
Correct Answer
A. 500ml -
- 27.
Internal respiration takes place in the lungs?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
External respiration takes place in the lungs, internal respiration takes place in the tissues.Rate this question:
-
- 28.
In a healthy adult a person breaths in approximately 500 ml of air per respiration. How much actually reaches the alveolar sac's found in the lungs?
- A.
350ml
- B.
50ml
- C.
150ml
- D.
163 ml
- E.
400ml
- F.
300ml
- G.
450ml
Correct Answer
A. 350mlExplanation
The other 150 ml remains in anatomical dead space.Rate this question:
-
- 29.
Which receptor monitors CO2 and O2 in the blood?
- A.
Chemoreceptors
- B.
Baroreceptors
Correct Answer
A. Chemoreceptors -
- 30.
At rest how many milliliters of 02 does the body cells use each minute?
- A.
200ml
- B.
100ml
- C.
300ml
- D.
400ml
- E.
500ml
- F.
525ml
- G.
700ml
Correct Answer
A. 200ml -
- 31.
CO2 is over (?) times as strong as the binding of 02 to haemoglobin.
- A.
200
- B.
100
- C.
5
- D.
10
Correct Answer
A. 200 -
- 32.
In a embryo when does the respiratory system begin to develop?
- A.
Week 4
- B.
Week 8
- C.
Week 1
- D.
Week 6
- E.
Week 3
- F.
Week 22
- G.
Week 30
Correct Answer
A. Week 4 -
- 33.
Each lung is enclosed in a single protective membrane called the pleural membrane?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Each lung is enclosed in a double layered protective membrane called the pleural membrane. The outer is called pleural pleura and the inner deeper on is called the visceral pleura.Rate this question:
-
- 34.
Which bronchus is longer?
- A.
Left
- B.
Right
Correct Answer
A. Left -
- 35.
Which bronchus is wider?
- A.
Right
- B.
Left
Correct Answer
A. Right -
- 36.
The respiratory system maintains the pH levels of the blood. What should the level be?
- A.
7.4
- B.
1.0
- C.
8.9
- D.
6.9
Correct Answer
A. 7.4Explanation
0 is like battery acid, 7 is neutral and 12 is like soapy water.Rate this question:
-
- 37.
What is the most important muscle of inhalation?
- A.
Diaphragm
- B.
Heart
- C.
Abdo
- D.
Lungs
- E.
Chest muscles
Correct Answer
A. Diaphragm -
- 38.
The diaphragm is dome is shape, during normal contraction it descends about 1cm. In strenuous breathing it may descend?
- A.
10 cm
- B.
6 cm
- C.
5 cm
- D.
3 cm
Correct Answer
A. 10 cm -
- 39.
During inhalation the intercostal muscles?
- A.
Contract
- B.
Relax
Correct Answer
A. Contract -
- 40.
Blood circulation in the lungs is called?
- A.
Pulmonary circulation
- B.
Systemic circulation
Correct Answer
A. Pulmonary circulation -
- 41.
The alveoli are lined with a substance called?
- A.
Surfactant
- B.
Oxygen
- C.
Muscle
- D.
Capillaries
Correct Answer
A. Surfactant -
- 42.
How many lobes does the left lung have?
- A.
2
- B.
4
- C.
3
- D.
5
- E.
1
Correct Answer
A. 2 -
- 43.
In a adult the trachea is approximately (?) in diameter.
- A.
2 - 1/2 cm
- B.
1 - 1/2 cm
- C.
1 cm
- D.
3 cm
- E.
3 - 1/2 cm
- F.
4 - 1/2 cm
- G.
4cm
Correct Answer
A. 2 - 1/2 cm -
- 44.
In adults what percentage of air remains in the upper airway passages?
- A.
30%
- B.
5%
- C.
10%
- D.
20%
- E.
60%
Correct Answer
A. 30% -
- 45.
The anatomical dead space includes the trachea & larger bronchi?
- A.
True
- B.
False
Correct Answer
A. True -
- 46.
Ventilation is the process of moving air in and out of the lungs?
- A.
True
- B.
False
Correct Answer
A. True -
- 47.
Inspiration is the process of moving air out of the lungs?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Inspiration is the process of moving there into the lungs. Expiration is the process of moving there out of the lungs.Rate this question:
-
- 48.
How many parts of the brain are responsible for respirations?
- A.
4
- B.
1
- C.
2
- D.
3
- E.
5
Correct Answer
A. 4 -
- 49.
Stretch receptors in the lungs are responsible for the Hering-Breuer reflex which causes you to take deep breaths?
- A.
True
- B.
False
Correct Answer
A. True -
- 50.
Chemoreceptors can be found in the heart?
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
They are found in the aortic arch.Rate this question:
-
.jpg "The trachea is composed of approx how many pieces of C shape cartilage?")
.jpg "The trachea of an average sized adult is?")
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Mar 21, 2022Quiz Edited by
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Mar 03, 2014Quiz Created by
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