HNC Mini - Mechanism of Breathing

What is the process called that involves the exchange of fresh and stale air between the external environment and the alveolar air sacs?

• Respiration Rate

• Ventilation

• Inspiration

• Expiration

What are the two stages of breathing?

• Inhalation and Exhalation

• Inspiration and Expiration

• Ventilation and Respiration

• Contraction and Relaxation

What is the term for the number of cycles (in breaths and out breaths) per minute?

• Tidal Volume

• Residual Volume

• Respiratory Rate

• Ventilation Rate

Which of the following describes the lungs best?

• Active

• Passive

• Dynamic

• Rigid

What is the name of the 2-layered membrane connecting the lungs to the thoracic wall?

• Diaphragm

• Pleura

• Alveoli

• Bronchi

What happens if the pleura is disrupted and negative pressure is lost?

• The lungs expand

• The lungs collapse

• The lungs inflate

• The lungs contract

What brings about inspiration?

• Relaxation of the diaphragm

• Contraction of the diaphragm and external intercostal muscles

• Contraction of the internal intercostal muscles

• Relaxation of the intercostal muscles

What helps to force air out of the lungs during expiration?

• External intercostal muscles

• Internal intercostal muscles

• Diaphragm contraction

• Pleura expansion

What is the term for the quantity of air passed into and out of the lungs in each breath?

• Residual Volume

• Tidal Volume

• Respiratory Rate

• Ventilation Rate

What is the term for the air remaining in the lungs after forceful respiration?

• Tidal Volume

• Residual Volume

• Respiratory Rate

• Ventilation Rate