Respiratory Anatomy and Physiology

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

Gas exchange

Regulation of blood pH

Vocalization

Regulation of body temperature

Which of the following structures is responsible for gas exchange in the lungs? *

Bronchi

Alveoli

Trachea

Pharynx

Which of the following is a function of the mucus produced in the respiratory tract? *

Lubricating the airways

Trapping dust and particles

Providing oxygen to the body

Absorbing carbon dioxide

During inspiration, which muscle contracts to increase the volume of the thoracic cavity? *

Diaphragm

External intercostal muscles

Internal intercostal muscles

Abdominal muscles

Which of the following is NOT a function of the nasal cavity? *

Warming and humidifying air

Filtering out dust and particles

Detecting odors

Exchange of oxygen and carbon dioxide

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

Trachea

Bronchi

Alveoli

Bronchioles

Which of the following is the correct sequence of structures air passes through during inspiration? *

Trachea – Bronchi – Bronchioles – Alveoli

Bronchi – Trachea – Alveoli – Bronchioles

Trachea – Bronchioles – Bronchi – Alveoli

Trachea – Bronchi – Alveoli – Bronchioles

Which of the following is the main muscle of respiration? *

Diaphragm

Intercostal muscles

Abdominal muscles

Sternocleidomastoid

Which of the following is NOT a function of the pleura? *

Lubricating the lungs

Reducing friction during breathing

Providing a barrier against infection

Anchoring the lungs to the chest wall

Which of the following statements about surfactant is true? *

It increases surface tension in the alveoli

It is produced by type II alveolar cells

It decreases compliance of the lungs

It is more abundant in premature infants

Which of the following is NOT a function of the larynx? *

Phonation

Air filtration

Prevention of food aspiration

Cough reflex

Which of the following is a function of the epiglottis? *

Phonation

Air filtration

Prevention of food aspiration

Gas exchange

Which of the following statements about the bronchial circulation is true? *

It carries oxygenated blood to the lungs

It is part of the systemic circulation

It supplies nutrients to the bronchi and bronchioles

It drains into the pulmonary veins

Which of the following is NOT a function of the respiratory system in maintaining acid-base balance? *

Regulation of carbon dioxide levels

Regulation of bicarbonate levels

Regulation of hydrogen ion levels

Regulation of oxygen levels

Which of the following is a function of the respiratory system in immune defense? *

Production of antibodies

Activation of complement proteins

Removal of pathogens via mucociliary clearance

Phagocytosis of bacteria

Which of the following is a characteristic of asthma? *

Decreased airway resistance

Reversible airflow obstruction

Decreased mucus production

Increased lung compliance

Which of the following is a symptom of chronic obstructive pulmonary disease (COPD)? *

Productive cough

Hemoptysis

Pleuritic chest pain

Wheezing

Which of the following is a complication of pneumonia? *

Hypoxemia

Hypercapnia

Hypotension

Hypothermia

Which of the following is NOT a risk factor for developing lung cancer? *

Smoking

Radon exposure

Family history of lung cancer

High dietary fiber intake

Which of the following is a feature of restrictive lung diseases? *

Decreased lung compliance

Air trapping

Hyperinflation of the lungs

Decreased total lung capacity

Which of the following is a feature of obstructive sleep apnea? *

Decreased respiratory effort during sleep

Decreased oxygen saturation during sleep

Decreased arousal from sleep

Decreased risk of cardiovascular disease

Which of the following is a function of the diaphragm? *

Contracting during expiration

Elevating the ribs during inspiration

Relaxing during inspiration

Assisting in forced expiration

Which of the following is a feature of chronic bronchitis? *

Irreversible airflow obstruction

Increased mucus production

Destruction of alveolar walls

Presence of bullae in the lungs

Which of the following is NOT a function of the pleura? *

Lubricating the lungs

Reducing friction during breathing

Anchoring the lungs to the chest wall

Exchange of oxygen and carbon dioxide

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

Alveoli

Trachea

Bronchioles

Bronchi

MCQ-RES-01

Respiratory Anatomy and Physiology