respiratory quotients

quotient /quo·tient/ (kwo´shent) a number obtained by division.

achievement quotient the achievement age divided by the mental age, indicating progress in learning.

caloric quotient the heat evolved (in calories) divided by the oxygen consumed (in milligrams) in a metabolic process.

intelligence quotient a measure of intelligence obtained by dividing the mental age by the chronological age and multiplying the result by 100.

respiratory quotient (RQ) the ratio of the volume of carbon dioxide given off by the body tissues to the volume of oxygen absorbed by them; usually equal to the corresponding volumes given off and taken up by the lungs.

respiratory quotient

n. Abbr. RQ

The ratio of carbon dioxide produced by tissue metabolism to oxygen consumed in the same metabolism.

respiratory quotient (RQ),

the ratio of the volume of carbon dioxide produced to the volume of oxygen consumed per unit of time by the body under steady-state conditions. Depending on the net metabolic needs of all parts of the body at a given moment, the ratio ranges from 0.7 to 1 and averages around 0.8. The RQ varies for different metabolic fuels: the RQ of fat is lower than that of protein, which is lower than that of glucose. Also called metabolic respiratory quotient.

quotient [kwo´shent]

a number obtained by division.

achievement quotient the achievement age divided by the mental age, indicating progress in learning.

caloric quotient the heat evolved (in calories) divided by the oxygen consumed (in milligrams) in a metabolic process.

intelligence quotient IQ; a numerical expression of intellectual capacity obtained by multiplying the mental age of the subject, ascertained by testing, by 100 and dividing by the chronological age.

respiratory quotient RQ; the ratio of the volume of carbon dioxide given off by the body tissues to the volume of oxygen absorbed by them; usually equal to the corresponding volumes given off and taken up by the lungs. It varies with the fuel source used: for carbohydrates it is 1.0; for lipids 0.7; for proteins 0.8; and with overfeeding (lipogenesis) 1.0–1.3.

quotient

a number obtained by division.

caloric quotient

the heat evolved (in calories) divided by the oxygen consumed (in milligrams) in a metabolic process.

respiratory quotient

see respiratory quotient.

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