StudentAidUnit 2: Human Respiratory System — Mcqs
10th Class Biology · Unit 2: Human Respiratory System
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Multiple Choice Questions
1.Breathing means:
2.Which path does air take immediately after passing through the larynx?
3.Why are alveoli surrounded by capillaries?
4.Which feature of alveoli helps in rapid gas exchange?
5.Which action increases lung volume during breathing?
6.Inhaled air contains 21% oxygen. What is its percentage in exhaled air?
7.Which factor controls the breathing rate?
8.The walls of alveoli are broken in:
9.Smoking leads to lung cancer by:
10.Which chemical in cigarette smoke directly leads to addiction?
SLO Based Multiple Choice Questions
Human Respiratory System
11.Respiration in living organisms always involves:
12.The gas exchange portion of the human respiratory system is the:
13.Which blood vessel surrounds the alveoli?
14.The correct order of the structures involved in the flow of air in the human body is:
15.Food is prevented from entering into the larynx by:
16.Which part of the air passageway is also called the windpipe?
17.The exchange of gases in lungs occurs in:
18.How many bronchi are there in the air passageway?
19.Which process does not occur in the nasal cavity?
20.The opening of larynx is called:
21.The process of gaseous exchange involves:
The Mechanism of Breathing
22.Which structure actively helps in taking the air out of lungs?
23.Point out the FALSE statement about respiration.
24.The diaphragm is flat, the ribs move out; this occurs during:
25.The chest cavity is separated from the abdominal cavity by a muscled called:
26.Inspiration is also known as:
27.The primary chemical stimulus for breathing is the concentration of:
28.In humans during expiration:
29.What is the percentage of oxygen in expired air when a person is resting?
30.When you inhale, the diaphragm:
31.The percentage of oxygen gas in inspired air is 21% and in expired air it is 16%. This difference in the amount of oxygen gas is due to the:
32.Which one of the following row best describes the action of different structures associated with the process of inhalation?
33.Which row correctly describe the functions of the diaphragm, cilia and mucous in human gaseous exchange system?
Respiratory Disorders
34.One reason for emphysema is:
35.The disease involving breakdown of air sacs of the lungs is:
36.In asthma, shortness of breath occur due to:
37.High fever, cold and cough with sputum production are symptoms of:
38.Chemotherapy is treatment of:
39.Emphysema and Asthma are diseases of:
40.Cigarette smoke is the most common cause of:
41.Cigarette smoke contains:
42.Which of the following is related to emphysema?
43.Cough, mild wheezing, fever, chills, and shortness of breath (especially when doing hard job) are symptoms of:
- a Emphysema
- b Pneumonia
- c Bronchitis
- d Asthma
44.It is a form of allergy: