Respiratory System Quiz

What is the average respiratory rate?

• 10-12 breaths per minute

• 12-15 breaths per minute

• 15-18 breaths per minute

• 18-20 breaths per minute

Which muscle contracts during inspiration?

• Abdominal muscles

• Both diaphragm and intercostal muscles

• Intercostal muscles only

• Diaphragm only

What is the function of the intercostal muscles?

• To control air entry

• help move the rib cage and thus assist in breathing

• To secrete surfactants

• To increase the volume of the thoracic cavity

What is the location of the first rib?

• Separated from the rib below by intercostal space

• Middle of the thorax

• Lowermost of the twelve ribs

• Uppermost of the twelve ribs

What is the function of the bronchi and bronchioles?

• To increase the volume of the thoracic cavity

• To control the speed and volume of airflow

• To secrete surfactants

• To exchange gases in the alveoli

What is the purpose of the pleura cavity?

• To surround each lung

• To control air entry

• To hold fluid

• To attach to the lung

• provide mechanical protection and a smooth, lubricating elastic surface for the lungs to move during breathing

What is the mechanism of breathing?

• Movement of air into and out of the lungs

• Exchange of gases

• Pulmonary ventilation

• Inspiration and expiration

What is the function of the mucociliary escalator?

• To increase the volume of the thoracic cavity

• To push mucus and trapped particles upwards

• To control air entry

• To exchange gases in the alveoli

What is the structure that prevents alveoli from drying and reduces surface tension?

• Alveolus wall

• Capillary wall

• Respiratory membrane

• Septal cells

Where does the exchange of gases take place?

• In the esophagus

• In the alveoli

• In the bronchi

• In the trachea