wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Respiratory System MCQs

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.

The primary function of the respiratory system is to:

a)

Digest food

b)

Exchange oxygen and carbon dioxide

c)

Regulate blood pressure

d)

Produce hormones

2.

The mucous membrane lining the respiratory tract is called:

a)

Serosa

b)

Mucus

c)

Mucosa

d)

Alveoli

3.

Sticky secretion that traps foreign particles in the airways is:

a)

Sputum

b)

Mucus

c)

Plasma

d)

Saliva

4.

Which structure separates the two nostrils?

a)

Turbinate

b)

Pharynx

c)

Septum

d)

Larynx

5.

The common passageway for both air and food is the:

a)

Larynx

b)

Trachea

c)

Pharynx

d)

Bronchi

6.

The structure that houses the vocal cords is the:

a)

Pharynx

b)

Larynx

c)

Trachea

d)

Bronchi

7.

Which structure conducts air from the larynx to the bronchi?

a)

Pharynx

b)

Trachea

c)

Alveoli

d)

Diaphragm

8.

The primary site of gas exchange in the lungs is the:

a)

Bronchi

b)

Bronchioles

c)

Alveoli

d)

Trachea

9.

←←←←←←←←←

a)

پێکەنیم😂

b)

پێنەکنیم😏

10.

Which muscle plays a crucial role in breathing?

a)

Intercostal muscle

b)

Abdominal muscle

c)

Diaphragm

d)

Pectoral muscle

11.

Pulmonary ventilation refers to:

a)

Gas exchange between blood and tissues

b)

Oxygen transport by hemoglobin

c)

Air movement in and out of lungs

d)

Cellular respiration

12.

Inspiration is best described as:

a)

Passive process

b)

Diaphragm relaxation

c)

Active process

d)

Abdominal muscle contraction only

13.

Low oxygen level in body tissues is known as:

a)

Hypoxemia

b)

Hypercapnia

c)

Hypoxia

d)

Apnea

14.

Excess carbon dioxide in the blood is called:

a)

Hypocapnia

b)

Hypercapnia

c)

Hypoxia

d)

Cyanosis

15.

Listening to lung sounds using a stethoscope is termed:

a)

Percussion

b)

Palpation

c)

Inspection

d)

Auscultation

16.

Normal breathing is known as:

a)

Dyspnea

b)

Apnea

c)

Eupnea

d)

Tachypnea

17.

Rapid breathing is called:

a)

Bradypnea

b)

Eupnea

c)

Tachypnea

d)

Dyspnea

18.

The suffix “-capnia” refers to:

a)

Oxygen level

b)

Smell

c)

Carbon dioxide level

d)

Breathing

19.

Which prefix means “slow”?

a)

Dys-

b)

Brady-

c)

Eu-

d)

Tachy-

20.

A chronic inflammatory disease causing airway narrowing is:

a)

Pneumonia

b)

COPD

c)

Asthma

d)

Tuberculosis