Lung Volumes and Capacities

Which of the following best describes the function of the alveolus (alveoli)?

• The alveoli contract and work like a vacuum to pull air into the lungs.

• The alveoli are tiny sacs where gas exchange occurs by diffusion of gases.

• The alveoli are passageways that allow air to travel from the nasal cavity to the pharynx

• The alveoli are a movable flap that covers the throat to prevent food and drink from entering.

Tags

NGSS.HS-LS1-7

Which structures are responsible for contracting to help air come into the lungs?

• The ribcage and trachea

• The trachea and larynx

• The nasal cavity and oral cavity

• The diaphragm and intercostal muscles

Which process allows for gas exchange in the alveoli?

• Diffusion of molecules

• Cellular respiration

• Muscle contractions

• Photosynthesis

Oxygen is needed by cells to produce ATP. During this process, carbon dioxide is created as a byproduct. Which biological process is responsible for the chemical conversion of oxygen to carbon dioxide.

• Diffusion of molecules

• Cellular respiration

• Muscle contraction

• Photosynthesis

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Volume of air inhaled forcefully after normal tidal volume. (deep breath)

• Inspiratory Reserve Volume

• Tidal Volume

• Expiratory Reserve Volume

• Residual Volume

Volume of air that can be exhaled forcefully after exhalation of normal tidal volume.

• Inspiratory Reserve Volume

• Tidal Volume

• Expiratory Reserve Volume

• Residual Volume

Which of the following volumes is used to measure a normal breath?

• Inspiratory Reserve Volume

• Tidal Volume

• Expiratory Reserve Volume

• Residual Volume

Which of the following best matched the total lung capacity equation?

• IC = ERV + RV

• VC = VT + ITV + RV

• TLC = VC + IRV

• TLC = IRV + ERV + TV + RV

The blue arrow is demonstrating the extra air inhaled after a normal breath. Which volume is the blue arrow?

• Tidal Volume (TV)
• Expiratory Reserve Volume (ERV)
• Residual Volume (RV)
• Inspiratory Reserve Volume (IRV)

The green arrow is demonstrating the extra air exhaled after a normal breath. What is the volume of the green arrow (ERV)?

• ~ 1200 mL

• ~ 1000 mL

• ~ 1500 mL

• ~ 800 mL