Respiratory System Mcqs

Q: Which part of the respiratory system is also known as the windpipe?

A) Larynx

B) Bronchi

C) Pharynx

D) Trachea

 Answer: D) Trachea

 

Q: What is the correct number of lobes in each lung?

A) Right lung: 2 lobes, Left lung: 3 lobes

B) Right lung: 3 lobes, Left lung: 2 lobes

C) Right lung: 4 lobes, Left lung: 1 lobe

D) Right lung: 1 lobe, Left lung: 4 lobes

 Answer: B) Right lung: 3 lobes, Left lung: 2 lobe

 

Q: Which part of the respiratory system is responsible for warming, humidifying, and filtering the air before it enters the lungs?

A) Alveoli

B) Bronchioles

C) Nasal cavity

D) Pharynx

 

Answer: C) Nasal cavit

Q: The serous membrane known as the pleura is divided into two linings. The outermost membrane is called ?

A) Visceral pleura

B) Pulmonary pleura

C) Parietal pleura

D) Thoracic pleura

 Answer: C) Parietal pleura

 

Q: What is the space between the left and right lung called?

A) Interlobar space

B) Pleural cavity

C) Mediastinum

D) Alveolar sac

 Answer: C) Mediastinum

 

Q. Which structure in the respiratory system prevents food or liquid from entering the airway during swallowing?

A) Larynx

B) Pharynx

C) Epiglottis

D) Trachea

 Answer: C) Epiglottis

 

Q: What structure separates the chest cavity from the abdominal cavity and aids in breathing?

A) Liver

B) Diaphragm

C) Heart

D) Stomach

 Answer: B) Diaphragm

 

Q: Which of the following is NOT a part of the upper respiratory tract?

A) Nasal cavity

B) Larynx

C) Bronchi

D) Pharynx

 Answer: C) Bronchi

 

Q: Which respiratory disease is characterized by inflammation and narrowing of the airways, leading to symptoms such as wheezing, coughing, and shortness of breath?

 

A) Asthma

B) Bronchitis

C) Pneumonia

D) Tuberculosis

 Answer: A) Asthma

 

Q. Which respiratory disease is a viral infection that primarily affects the upper respiratory tract, leading to symptoms such as runny nose, sore throat, and cough?

 

 

A) Influenza

B) Common cold

C) Tuberculosis

D) Pneumonia

 

Answer: B) Common cold

 

Q: What is the name of the muscular tube that connects the throat to the bronchi and carries air to the lungs?

A) Larynx

B) Trachea

C) Pharynx

D) Alveoli

 Answer: B) Trachea

 

Q: Pulmonary ventilation is also known as ?

A) Breathing

B) Cellular respiration

C) External respiration

D) Internal respiration

 Answer: A) Breathing

 

Q: Identify the structures that aid in the cleansing of the air ?

A) Blood vessels, cilia, and mucous

B) Blood vessels, cilia, and coarse nasal hairs

C) Blood vessels, coarse nasal hairs, and mucus

D) Cilia, coarse nasal hairs, and mucous

 Answer: D) Cilia, coarse nasal hairs, and mucous

 

Q: ______ respiration is the exchange of oxygen and carbon dioxide between tissue cells and blood in systemic capillaries ?

A) External

B) Internal

C) Pulmonary

D) Cellular

 Answer: B) Internal

 

 Q: Which structures allow the trachea and bronchi to stay open all the time?

 A) Cilia

 

B) C-shaped cartilage rings

C) Glottis

D) Mucous membranes

 Answer: B) C-shaped cartilage rings

 

Q: During expiration, relaxation of the diaphragm leads to a ________ in the volume of the thoracic cavity and an __________ in intrapulmonary pressure ?

 A) decrease; decrease

 

B) decrease; increase

C) increase; decrease

D) increase; increase

 Answer: B) decrease; increase

 

 Q: Normal, quiet respiration moves about 500 mLs of air. What is this volume called?

 A) Vital capacity

 

B) Expiratory reserve volume

C) Residual volume

D) Tidal volume

 Answer: D) Tidal volume

 

 Q: __________ muscles assist the diaphragm in changing the volume of the thoracic cavity by elevating and lowering the rib cage ?

 A) Intercostal

 

B) Sternocleidomastoid

C) Pectoralis major

D) Rectus abdominis

 Answer: A) Intercostal

 

Q: What is the correct path air takes when it enters the trachea on its way to the lungs?

A) Bronchi / bronchioles / pulmonary capillaries / alveoli

B) Bronchioles / bronchi / alveoli / pulmonary capillaries

C) Bronchi / pulmonary capillaries / alveoli / bronchioles

D) Bronchi / bronchioles / alveoli / pulmonary capillaries

 Answer: D) Bronchi / bronchioles / alveoli / pulmonary capillaries