What is total minute volume?

What is total minute volume?

• A. Volume moved per minute.
• B. Volume moved per breath.
• C. Air in lungs after expiration.
• D. Air exhaled in one second.

Answer: (A)

Minute volume, or minute ventilation, is the total amount of air moving into and out of the lungs in one minute. It is determined by how much air is taken in with each breath (tidal volume) and how many breaths occur per minute (respiratory rate). Expressed in liters per minute, it reflects the overall ventilatory activity of the respiratory system and how much fresh air reaches the gas-exchange surfaces each minute. The best choice matches this definition by describing volume moved per minute. The other ideas describe different quantities: volume moved per breath is tidal volume, air remaining in the lungs after expiration relates to residual or functional residual capacity, and air exhaled in one second refers to a rate of flow, not total air moved per minute.

Minute volume, or minute ventilation, is the total amount of air moving into and out of the lungs in one minute. It is determined by how much air is taken in with each breath (tidal volume) and how many breaths occur per minute (respiratory rate). Expressed in liters per minute, it reflects the overall ventilatory activity of the respiratory system and how much fresh air reaches the gas-exchange surfaces each minute.

The best choice matches this definition by describing volume moved per minute. The other ideas describe different quantities: volume moved per breath is tidal volume, air remaining in the lungs after expiration relates to residual or functional residual capacity, and air exhaled in one second refers to a rate of flow, not total air moved per minute.