Quadratus Lumborum
/kwɒˈdreɪtəs lʌmˈbɔːrəm/
A muscle of the posterior abdominal wall that helps with lateral flexion of the vertebral column and stabilizes the pelvis.
Quadriceps Femoris
/ˌkwɒdrɪsɛps ˈfɛmərɪs/
A large muscle group on the front of the thigh, consisting of four individual muscles that extend the knee.
Qualitative Analysis
/ˈkwɒlɪtətɪv əˈnælɪsɪs/
In physiology, the determination of the nature of a substance (like identifying a hormone in a sample) rather than its amount.
Quantitative Analysis
/ˈkwɒntɪtətɪv əˈnælɪsɪs/
The measurement of the exact amount or concentration of a physiological substance (e.g., measuring blood glucose levels in mg/dL).
Quaternary Structure
/kwəˈtɜːrnəri ˈstrʌktʃər/
The most complex level of protein structure, formed by the combination of two or more polypeptide chains (e.g., the structure of hemoglobin).
Quiescent Phase
/kwiˈɛsənt feɪz/
A period of inactivity or dormancy in a cell (often referred to as G0 phase) or an organ before a response is triggered.