- functional residual capacity
- the volume of gas remaining at the end of a normal quiet exhalation; abbreviated FRC. See illustration.
Medical dictionary. 2011.
functional residual capacity
Look at other dictionaries:
Functional residual capacity — (FRC) is the volume of air present in the lungs at the end of passive expiration. At FRC, the elastic recoil forces of the lungs and chest wall are equal but opposite and there is no exertion by the diaphragm or other respiratory muscles.FRC is… … Wikipedia
capacity — 1. The potential cubic contents of a cavity or receptacle. 2. Power to do. SEE ALSO: volume. [L. capax, able to contain; fr. capio, to take] buffer c. the amount of hydrogen ion (or hydroxyl ion) required to bring about a specific pH change in a… … Medical dictionary
Closing capacity — The closing capacity (CC) is the volume in the lungs at which its smallest airways, the alveoli collapse. The alveoli lack supporting cartilage and so depend on other factors to keep them open. The closing capacity is greater than the residual… … Wikipedia
total lung capacity — (TLC) the volume of gas contained in the lungs at the end of a maximal inhalation. See illustration. Diagram of lung volumes and capacities: ERV, expiratory reserve volume; FRC, functional residual capacity; FVC, forced vital capacity; IC,… … Medical dictionary
inspiratory capacity — n the total amount of air that can be drawn into the lungs after normal expiration * * * the volume of gas that can be taken into the lungs on a full inhalation, starting from the functional residual capacity; it is equal to the tidal volume plus … Medical dictionary
Diffusion capacity — Diagnostics MeSH D011653 In biology, diffusion capacity is a measurement of the lung s ability to transfer gases. Oxygen uptake may be limited by diffusion in circumstances of low ambient oxygen or high pul … Wikipedia
Spirometry — TLC Total lung capacity: the volume in the lungs at maximal inflation RV Residual volume: the volume of air remaining in the lungs … Wikipedia
respiration, human — ▪ physiology Introduction the process by which oxygen is taken up and carbon dioxide discharged. The design of the respiratory system The human gas exchanging organ, the lung, is located in the thorax, where its delicate tissues are… … Universalium
FRC — Abbreviation for functional residual capacity. * * * Federal Radiation Council; fiber reinforced composite; frozen red cells; functional reserve capacity; functional residual capacity * * * functional residual capacity … Medical dictionary
air — 1. A mixture of odorless gases found in the atmosphere in the following approximate percentages by volume after water vapor has been removed: oxygen, 20.95; nitrogen, 78.08; argon 0.93; carbon dioxide, 0.03; other gases, 0.01. Formerly used to … Medical dictionary
