functional residual capacity

(redirected from functional residual air)
Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.

capacity

 [kah-pas´ĭ-te]
the power to hold, retain, or contain, or the ability to absorb; usually expressed numerically as the measure of such ability.
closing capacity (CC) the volume of gas in the lungs at the time of airway closure, the sum of the closing volume and the residual volume. See also closing volume.
decreased intracranial adaptive capacity a nursing diagnosis accepted by the North American Nursing Diagnosis Association, defined as the state in which intracranial fluid dynamic mechanisms that normally compensate for increases in intracranial volumes are compromised, resulting in repeated disproportionate increases in intracranial pressure in response to a variety of noxious and nonnoxious stimuli.
diffusing capacity see diffusing capacity.
forced vital capacity the maximal volume of gas that can be exhaled from full inhalation by exhaling as forcefully and rapidly as possible. See also pulmonary function tests.
functional residual capacity the amount of gas remaining at the end of normal quiet respiration.
heat capacity the amount of heat required to raise the temperature of a specific quantity of a substance by one degree Celsius.
inspiratory capacity the volume of gas that can be taken into the lungs in a full inhalation, starting from the resting inspiratory position; equal to the tidal volume plus the inspiratory reserve volume.
maximal breathing capacity maximum voluntary ventilation.
thermal capacity heat capacity.
total lung capacity the amount of gas contained in the lung at the end of a maximal inhalation.
 Subdivisions of total lung capacity: TLC, total lung capacity; V, tidal volume; IC, inspiratory capacity; FRC, functional residual capacity; ERV, expiratory reserve volume; VC, vital capacity; RV, residual volume. From Dorland's, 2000.
virus neutralizing capacity the ability of a serum to inhibit the infectivity of a virus.
vital capacity (VC) see vital capacity.

func·tion·al re·sid·u·al ca·pac·i·ty (FRC),

the volume of gas remaining in the lungs at the end of a normal expiration; it is the sum of expiratory reserve volume and residual volume.

functional residual capacity (FRC)

the volume of gas in the lungs at the end of a normal tidal volume exhalation. The functional residual capacity is equal to the residual volume plus the expiratory reserve volume. In anesthesia FRC serves as an oxygen reservoir in an apneic patient. FRC is reduced in obesity due to the cephalad position of the diaphragm.

functional residual capacity

Lung medicine The volume of air that remains in the lungs after a normal–ie not forced–expiration Components Expiratory reserve volume, residual volume See Lung volumes. Cf Total lung capacity, Vital capacity.

func·tion·al re·sid·u·al ca·pac·i·ty

(FRC) (fŭngk'shŭn-ăl rĕ-zid'yū-ăl kă-pas'i-tē)
The volume of gas remaining in the lungs at the end of a normal expiration; it is the sum of expiratory reserve volume and residual volume.
Synonym(s): functional residual air.

func·tion·al re·sid·u·al ca·pac·i·ty

(FRC) (fŭngk'shŭn-ăl rĕ-zid'yū-ăl kă-pas'i-tē)
The volume of gas remaining in the lungs at the end of a normal expiration; it is the sum of expiratory reserve volume and residual volume.

capacity

the power to hold, retain, or contain, or the ability to absorb; usually expressed numerically as the measure of such ability.

carrying capacity
closing capacity (CC)
the volume of gas in the lungs at the time of airway closure. See also closing volume.
forced vital capacity
the maximal volume of gas that can be exhaled from full inspiration exhaling as forcefully and rapidly as possible. See also pulmonary function tests.
functional residual capacity
the amount of gas remaining at the end of normal quiet respiration.
heat capacity
thermal capacity.
inspiratory capacity
the volume of gas that can be taken into the lungs in a full inspiration, starting from the resting inspiratory position; equal to the tidal volume plus the inspiratory reserve volume.
maximal breathing capacity
maximal voluntary ventilation.
thermal capacity
the amount of heat absorbed by a body in being raised 1°C.
total lung capacity
the amount of gas contained in the lung at the end of a maximal inspiration.
virus neutralizing capacity
the ability of a serum to inhibit the infectivity of a virus.
vital capacity
the volume of gas that can be expelled from the lungs from a position of full inspiration, with no limit to duration of expiration; equal to inspiratory capacity plus expiratory reserve volume.
Full browser ?