Respiratory System Structure and Function: Interactive Learning Quizzes

Question 1

Which structure in the human respiratory system filters and warms inhaled air?

Accepted Answer

Nose

Answer

Pharynx

Answer

Trachea

Answer

Lungs

Question 2

What is the primary role of the epiglottis?

Accepted Answer

Prevents food from entering the trachea during swallowing

Answer

Regulates airflow into and out of the lungs

Answer

Produces mucus to trap dust and pathogens

Answer

Exchanges gases between the blood and inhaled air

Question 3

Which of the following cartilage types is found in the trachea and bronchi?

Accepted Answer

Elastic cartilage

Answer

Hyaline cartilage

Answer

Fibrous cartilage

Answer

Articular cartilage

Question 4

What is the main function of the alveoli?

Accepted Answer

Exchange gases between the blood and inhaled air

Answer

Produce surfactant

Answer

Filter inhaled air

Answer

Regulate body temperature

Question 5

What is the role of the diaphragm in breathing?

Accepted Answer

Contracts and flattens, increasing the volume of the thoracic cavity

Answer

Relaxes and becomes dome-shaped, decreasing the volume of the thoracic cavity

Answer

Produces mucus to trap dust and pathogens

Answer

Exchanges gases between the blood and inhaled air

Question 6

Which of the following is a common respiratory disease characterized by inflammation and narrowing of the airways?

Accepted Answer

Asthma

Answer

Emphysema

Answer

Pneumonia

Answer

Tuberculosis

Question 7

What is the primary function of the surfactant?

Accepted Answer

Reduce the surface tension of the alveoli, preventing them from collapsing

Answer

Trap dust and pathogens in the inhaled air

Answer

Regulate the exchange of gases between the blood and inhaled air

Answer

Produce mucus to lubricate the airways

Question 8

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

Accepted Answer

Production of hormones

Answer

Gas exchange

Answer

Maintenance of blood pH

Answer

Regulation of body temperature

Question 9

What is the role of the cilia in the respiratory tract?

Accepted Answer

Propel mucus towards the throat, removing dust and pathogens

Answer

Produce surfactant to reduce surface tension in the alveoli

Answer

Regulate the exchange of gases between the blood and inhaled air

Answer

Filter inhaled air

Question 10

What is the primary function of the cartilage rings in the bronchi?

Accepted Answer

Provide structural support to prevent collapse during breathing

Answer

Allow for significant expansion and contraction during respiration

Answer

Produce mucus to trap dust and particles

Question 11

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

Accepted Answer

Digestion and absorption of food

Answer

Gas exchange between the blood and the air

Answer

Regulation of acid-base balance

Answer

Immune defense against pathogens

Question 12

Where does the exchange of oxygen and carbon dioxide in the respiratory system take place?

Accepted Answer

Alveoli

Answer

Nose

Answer

Trachea

Answer

Diaphragm

Question 13

Which structure is responsible for warming, moistening, and filtering inhaled air?

Accepted Answer

Nasal cavity

Answer

Pharynx

Answer

Larynx

Answer

Trachea

Question 14

What is the name of the structure that houses the vocal cords?

Accepted Answer

Larynx

Answer

Pharynx

Answer

Trachea

Answer

Epiglottis

Question 15

Which of the following is a characteristic of emphysema?

Accepted Answer

Destruction of lung tissue, leading to reduced surface area for gas exchange

Answer

Narrowing of the airways, making it difficult to exhale

Answer

Increased mucus production, causing congestion and difficulty breathing

Answer

Scarring of the lung tissue, making the lungs less elastic

Question 16

What is the purpose of the ciliated cells in the respiratory tract?

Accepted Answer

To trap and expel inhaled particles, such as dust and bacteria

Answer

To produce mucus, which helps to moisten and protect the airways

Answer

To regulate airflow by contracting and relaxing

Answer

To secrete antibodies, which help to fight infections

Question 17

Which part of the lung is responsible for gas exchange?

Accepted Answer

Alveoli

Answer

Pleura

Answer

Bronchi

Answer

Bronchioles

Question 18

What is the term for the process of breathing in?

Accepted Answer

Inspiration

Answer

Expiration

Answer

Ventilation

Answer

Perfusion

Question 19

What is the main function of the nasal cavity in the respiratory system?

Accepted Answer

It warms, filters, and humidifies inhaled air.

Answer

It produces sound for speech.

Answer

It protects the lungs from infections.

Answer

It exchanges oxygen and carbon dioxide.

Question 20

Which structure prevents food from entering the trachea (windpipe)?

Accepted Answer

Epiglottis

Answer

Bronchi

Answer

Pharynx

Answer

Larynx

Question 21

What are the tiny air sacs in the lungs where gas exchange happens called?

Accepted Answer

Alveoli

Answer

Capillaries

Answer

Bronchioles

Question 22

What is the correct order of air flow through the respiratory system, starting from the nose?

Accepted Answer

Nose, pharynx, larynx, trachea, bronchi, bronchioles, alveoli

Answer

Trachea, pharynx, larynx, bronchi, bronchioles, alveoli, nose

Answer

Alveoli, bronchioles, bronchi, trachea, larynx, pharynx, nose

Question 23

Which muscle is primarily responsible for breathing in (inspiration)?

Accepted Answer

Diaphragm

Answer

Abdominal muscles

Answer

Trapezius

Answer

Intercostal muscles

Question 24

Which of these is NOT a characteristic of emphysema?

Accepted Answer

Increased lung elasticity

Answer

Difficulty breathing

Answer

Destruction of alveoli

Answer

Chronic cough

Question 25

A patient has a persistent cough, difficulty breathing, especially at night, and a history of smoking. Which respiratory condition could this suggest?

Accepted Answer

Chronic Obstructive Pulmonary Disease (COPD)

Answer

Asthma

Answer

Tuberculosis

Answer

Pneumonia

Question 26

What is the function of surfactant in the alveoli?

Accepted Answer

It reduces surface tension and prevents the alveoli from collapsing.

Answer

It facilitates gas exchange.

Answer

It filters out foreign particles.

Question 27

Why do the lungs need a large surface area for gas exchange?

Accepted Answer

To maximize the amount of oxygen that can be absorbed into the blood.

Answer

To increase the capacity for air storage.

Answer

To facilitate efficient mucus production.

Question 28

A patient with a chest injury has difficulty breathing and low oxygen levels. What could be the reason?

Accepted Answer

Pneumothorax (collapsed lung)

Answer

Pneumonia

Answer

Asthma

Answer

Bronchitis