- threshold substances
- those substances in the blood, such as glucose, that are excreted when they reach their renal threshold.
Medical dictionary. 2011.
threshold substances
Look at other dictionaries:
Threshold Limit Value — The Threshold Limit Value (TLV) of a chemical substance is a level to which it is believed a worker can be exposed day after day for a working lifetime without adverse health effects. Strictly speaking, TLV is a reserved term of the American… … Wikipedia
Threshold limit value — The threshold limit value (TLV) of a chemical substance is a level to which it is believed a worker can be exposed day after day for a working lifetime without adverse health effects. Strictly speaking, TLV is a reserved term of the American… … Wikipedia
renal threshold — n the concentration level up to which a substance (as glucose) in the blood is prevented from passing through the kidneys into the urine * * * the concentration of any of certain substances (threshold substances) in the blood plasma above which… … Medical dictionary
Odor detection threshold — The odor detection threshold is the lowest concentration of a certain odor compound that is perceivable by the human sense of smell. The thresholds of a chemical compound is determined in part by its shape, polarity, partial charges and molecular … Wikipedia
Odor threshold value — (=aroma threshold value, =OTV, =ATV)) is a measure of odor intensity of a substance. It is defined as a minimal concentration of that substance that can be detected by human nose.Some substances can be detected when their concentration is only… … Wikipedia
Critical threshold — Critical threshold, a notion derived from the percolation theory, refers to a threshold, that summons up to a critical mass. Under the threshold the phenomenon tends to abort, above the threshold, it tends to grow exponentially. In cases where… … Wikipedia
Renal threshold — In physiology, the renal threshold is the concentration of a substance dissolved in the blood above which the kidneys begin to remove it into the urine. Renal thresholds vary by substance – the low potency poison urea, for instance, is removed at … Wikipedia
nervous system — Anat., Zool. 1. the system of nerves and nerve centers in an animal or human, including the brain, spinal cord, nerves, and ganglia. 2. a particular part of this system. Cf. autonomic nervous system, central nervous system, peripheral nervous… … Universalium
environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… … Universalium
sensory reception, human — Introduction means by which humans react to changes in external and internal environments. Ancient philosophers called the human senses “the windows of the soul,” and Aristotle described at least five senses sight, hearing, smell, taste, and… … Universalium
