Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,921,319,073 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

respiratory quotient

   Also found in: Dictionary/thesaurus, Acronyms, Encyclopedia, Wikipedia 0.01 sec.
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.


Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link
Feedback
Add definition
Mentioned in?  References in periodicals archive?   Medical browser?   Full browser?
 
The respiratory quotient (RQ) has the same definition as the RER but indicates the balance between CO2 and O2 in the tissue level and will be exactly equal to RER only at steady state exercise.
Carbohydrate (CHO) and fat oxidation rates were calculated from the gas exchange measurements according to the non-protein respiratory quotient (R) technique (Peronnet and Massicote, 1991): CHO oxidation rate (mg x [min.
From rCO^sub 2^ TEE was calculated with the modified Weir equation27 using a respiratory quotient of 0.
 
 
 
Medical Dictionary
?

Terms of Use | Privacy policy | Feedback | Advertise with Us | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.