L4 - MCQ

Which part of the respiratory system is responsible for warming, cleaning, and humidifying the air?

Pharynx

Nose (correct)

Sinuses

Mouth

Which part of the respiratory system is responsible for gas exchange with the blood?

Bronchioles

Bronchi

Alveoli (correct)

Trachea

How many lobes does the left lung have?

Four

Two (correct)

Three

One

What is the function of the rib cage in the respiratory system?

All of the above Signup and view all the answers

What is another name for the rib cage?

Bony Thorax Signup and view all the answers

Which part of the respiratory system is responsible for voice production?

Larynx Signup and view all the answers

Which part of the respiratory system is located below the vocal folds?

Larynx Signup and view all the answers

What is the main function of the upper respiratory tract?

Warming, cleaning, and humidifying the air Signup and view all the answers

What is the main function of the lower respiratory tract?

Gas exchange with blood Signup and view all the answers

Which part of the respiratory system is responsible for creating an elevated ridge on the anterior surface?

Manubrium Signup and view all the answers

Which of the following is true about the rib cage?

The length of the front of the rib cage articulates with the Clavicle bone Signup and view all the answers

Which rib pairs are considered true ribs?

Pairs 1 to 7 Signup and view all the answers

What are rib pairs 8 to 10 considered?

False ribs Signup and view all the answers

What are rib pairs 11 and 12 considered?

Floating ribs Signup and view all the answers

What is the name of the sac that surrounds the lung tissue?

Pleural sac Signup and view all the answers

What is the layer that touches the lung tissue called?

Visceral pleura Signup and view all the answers

What is the layer lining up the inner surface of the muscles and ribs forming the rib cage called?

Parietal layer Signup and view all the answers

What is the space between the two layers of the pleural sac called?

Pleural cavity Signup and view all the answers

What is the pressure of air in the bronchial tree called?

Intra-alveolar pressure Signup and view all the answers

When does air flow occur from the atmosphere into the lungs?

When atmospheric pressure is higher than intra-alveolar pressure Signup and view all the answers

Which muscles contract during quiet inhalation?

Diaphragm, External intercostal muscles Signup and view all the answers

What happens during expiration at rest?

The muscles of inhalation relax and the rib cage returns to resting position Signup and view all the answers

What are the muscles of quiet inhalation?

Diaphragm, External intercostal muscles Signup and view all the answers

What is the function of the diaphragm during inhalation?

Draws the periphery closer to the central tendon Signup and view all the answers

Which muscles are activated during accessory respiration?

Sternocleidomastoid, Scaleni, Subclaveus, Pectoralis Major Signup and view all the answers

What is the action of the scaleni muscles?

Bends the neck ventral and lateral Signup and view all the answers

What is the function of the pectoralis major muscle during inhalation?

Brings the arm closer to the body Signup and view all the answers

What muscles are activated during accessory expiration?

Rectus Abdominus, Transversus Abdominus, Internal Oblique Abdominus, External Oblique Abdominus Signup and view all the answers

What is the action of the rectus abdominus muscle during expiration?

Compresses the rib cage and abdomen Signup and view all the answers

What is the action of the transversus abdominus muscle during expiration?