Introduction to the Respiratory System: Interactive Learning Quizzes

Question 1

Which of the following is NOT a primary function of the respiratory system?

Accepted Answer

Production of red blood cells

Answer

Gas exchange

Answer

Regulation of blood pH

Question 2

Which of the following structures is **not** a part of the conducting zone of the respiratory system?

Accepted Answer

Alveoli

Answer

Nasopharynx

Answer

Larynx

Answer

Trachea

Question 3

What is the main function of the respiratory system?

Accepted Answer

Gas exchange between the body and the environment

Answer

Regulation of blood pH

Answer

Production of body heat

Answer

Detoxification of waste products

Question 4

Which lung volume measurement represents the volume of air that remains in the lungs after maximal expiration?

Accepted Answer

Residual volume

Answer

Vital capacity

Answer

Functional residual capacity

Answer

Total lung capacity

Question 5

What type of respiratory control mechanism is primarily responsible for adjusting breathing rate in response to changes in arterial CO2 concentration?

Accepted Answer

Neural control

Answer

Humoral control

Answer

Behavioral control

Answer

Mechanical control

Question 6

Which of the following is a characteristic of restrictive lung disease?

Accepted Answer

Decreased vital capacity

Answer

Increased lung compliance

Answer

Increased airway resistance

Answer

Normal arterial oxygen saturation

Question 7

What is the main defense mechanism of the respiratory system against inhaled pathogens?

Accepted Answer

Mucociliary escalator

Answer

Alveolar macrophages

Answer

Neutrophils

Answer

Immunoglobulins

Question 8

What is the primary site of gas exchange in the lungs?

Accepted Answer

Alveoli

Answer

Bronchi

Answer

Bronchioles

Answer

Pleural space

Question 9

Which of the following respiratory disorders is characterized by reversible airflow limitation and airway hyperresponsiveness?

Accepted Answer

Asthma

Answer

Chronic obstructive pulmonary disease (COPD)

Answer

Cystic fibrosis

Answer

Pulmonary fibrosis

Question 10

What is the recommended first-line treatment for a patient with a severe acute asthma exacerbation?

Accepted Answer

Inhaled beta-2 agonists

Answer

Inhaled corticosteroids

Answer

Oral antibiotics

Answer

Intravenous fluids

Question 11

The anatomical structure primarily responsible for gas exchange between the blood and the external environment is the:

Accepted Answer

Alveoli

Answer

Trachea

Answer

Bronchi

Answer

Pleura

Question 12

Which of the following hormones is the primary regulator of ventilation in humans?

Accepted Answer

Carbon dioxide

Answer

Adrenaline

Answer

Cortisol

Answer

Thyroid hormone

Question 13

The process by which the respiratory muscles increase the volume of the lungs is known as:

Accepted Answer

Inspiration

Answer

Expiration

Answer

Respiration

Answer

Ventilation

Question 14

The anatomical space between the visceral and parietal pleura is called the:

Accepted Answer

Pleural space

Answer

Mediastinum

Answer

Pericardium

Answer

Alveolar space

Question 15

The technique commonly used to measure lung volumes and capacities is known as:

Accepted Answer

Spirometry

Answer

Bronchoscopy

Answer

Pulmonary function test

Answer

Radiography

Question 16

Which of the following is NOT a common clinical presentation of respiratory failure?

Accepted Answer

Bradycardia

Answer

Dyspnea

Answer

Cyanosis

Answer

Tachycardia

Question 17

What is the anatomical dead space, where gas does not participate in gas exchange?

Accepted Answer

Volume of airways filled with air during expiration

Answer

Volume of alveolar sac filled with air during expiration

Answer

Volume of alveoli filled with air during expiration

Answer

Volume of alveoli filled with air during inspiration

Question 18

Which of the following does NOT directly influence the rate of gas exchange in the lungs?

Accepted Answer

Cardiac output

Answer

Surface area of the alveoli

Answer

Thickness of the alveolar membrane

Answer

Partial pressure gradient of gases

Question 19

Which of the following is NOT a primary function of the respiratory system?

Accepted Answer

Production of hormones

Answer

Gas exchange

Answer

Regulation of blood pH

Answer

Thermoregulation

Question 20

Which layer of the lung is the site of gas exchange?

Accepted Answer

Alveoli

Answer

Pleura

Answer

Bronchi

Answer

Bronchioles

Question 21

Which pulmonary function test measures airway resistance?

Accepted Answer

Forced expiratory volume in one second (FEV1)

Answer

Vital capacity

Answer

Tidal volume

Answer

Inspiratory capacity

Question 22

Which type of respiratory drive is influenced by emotions and conscious thought?

Accepted Answer

Behavioral

Answer

Humoral

Answer

Neural

Answer

Mechanical

Question 23

What is a common cause of respiratory distress syndrome in premature infants?

Accepted Answer

Surfactant deficiency

Answer

Congenital heart disease

Answer

Pneumonia

Answer

Asthma

Question 24

Which of the following medications is a bronchodilator used to treat asthma?

Accepted Answer

Salbutamol

Answer

Propranolol

Answer

Atenolol

Answer

Lisinopril