noun
definition
The process of removing or ejecting material that has no further utility, especially from the body; the act of excreting.
definition
Something being excreted in that manner, especially urine or feces.
Examples of excretion in a Sentence
During excretion they irritate the kidneys and the sweat-glands, and thereby increase the excretion of urine and of sweat.
This, like the excretion of the sundew and other insectivorous plants, contains a digestive ferment (or enzyme) which renders the nitrogenous substances of the body of the insect soluble, and capable of absorption by the leaf.
When these are excited by the settling of an insect on the leaf they slowly bend over and imprison the intruder, which is detained there meanwhile by a sticky excretion poured out by the glands.
Small insects settle on the leaves and are caught in the viscid excretion.
Salicylic acid and salicin (q.v.) share the properties common to the group of aromatic acids, which, as a group, are antiseptic without being toxic to man - a property practically unique; are unstable in the body; are antipyretic and analgesic; and diminish the excretion of urea by the kidneys.
In the case of many Oligochaeta where there is no vascular network surrounding the nephridium, this function must be the chief one of those glands, the more elaborate process of excretion taking place in the case of nephridia surrounded by a rich plexus of blood capillaries.
The possession of a variable number of excretory tubes (Malpighian tubes), which are developed as outgrowths of the hind-gut and pour their excretion into the intestine,is also a distinctive character of the Hexapoda.
When a fly is captured, the viscid excretion becomes strongly acid and the naturally incurved margins of the leaf curve still further inwards, rendering contact between the insect and the leaf-surface more complete.
Lead and uric acid Clinical bottom line Chronic low level lead exposure may inhibit urate excretion.
Stomata are often absent, absorption and excretion of gases in solution being carried on through the epidermal layer.
The acetate and the citrate are valuable mild diuretics in Bright's disease and in feverish conditions, and by increasing the amount of urine diminish the pathological fluids in pleuritic effusion, ascites, &c. In tubal nephritis they aid the excretion of fatty casts.
The essential part of the medicinal treatment of this condition is the administration of iodides, which are able to decompose the insoluble albuminates of lead which have become locked up in the tissues, rapidly causing their degeneration, and to cause the excretion of the poisonous metal by means of the intestine and the kidneys.
Very rarely, as in the case of silver salts, excretion does not take place; but usually the drug is got rid of by the ordinary channels of elimination.
Ibandronic acid is eliminated by renal excretion only and does not undergo any biotransformation.
N-acetyl cysteine (NAC) may increase urinary excretion of zinc.
A variable quantity is involved in biliary excretion in unknown forms.
As a part of these discoveries has arisen another but kindred doctrine that of hormones (Starling), juices prepared, not for excretion, not even for partial excretion, but for the fulfilment of physiological equilibrium.
Diuretics aid the excretion of water and salts and help remove excess fluid from tissues.
Meconium ileus is a disorder that occurs in newborns in which the meconium, the neonate's first fecal excretion after birth, is abnormally thick and stringy, rather than the collection of mucus and bile that is normally passed.
Small, dark-brown specks of lice excretion may be visible on underwear.
Magnesium deficiency is often related to factors that inhibit absorption or increase its excretion from the body.
It is possible, with the increased excretion of water and the accelerated metabolism of fat, to induce a state of hypokalemia, lack of potassium in the blood.
This single cavity and its lining serve apparently for all those functions (digestion, excretion, circulation and often reproduction) which in more complex organisms are distributed among various cavities of independent and often very diverse origin.
In addition to fat loss, you will lose water weight as your body increases its excretion of fluids.
There is a suggestion that uric acid levels fell more, and that uric acid excretion was greater, with benzbromarone.
Elliott & Topps [4] further showed the response of allantoin excretion to dietary protein intake in cattle.
The primary outcome was the change in albumin excretion rate.
The unit of PD excretion and creatinine excretion is mmol/L.
The volume of the samples was measured, they were analyzed for fluoride concentration and the 24-hour urinary fluoride excretion was calculated.
The kidneys are capable of increasing calcium excretion nearly fivefold to maintain homeostatic serum calcium concentrations.
In the patient group, urinary excretion of 5-HIAA and serotonin was compared with concentrations of plasma indoles.
Probenecid can severely inhibit renal excretion of methotrexate, and so is contraindicated.
The desquamation of such cells into the intestinal lumen leads to the excretion of the copper.
As temperature decreases drug metabolism and excretion also decreases thereby prolonging recovery.
Once more, the notion that this indeterminate body contains potentially in itself the fundamental contraries - hot, cold, &c. - by the excretion or evolution of which definite substances were generated, is clearly a forecasting of that antithesis of potentiality and actuality which from Aristotle downwards has been made the basis of so many theories of development.
The function of nitrogenous excretion was not therefore a necessary part of the view - though it may be pointed out that there are grounds for believing that the gonad ducts are to some extent also organs of excretion (see below).
Cushny has shown experimentally that slowing of the blood-flow through renal tissue causes less sodium chloride to appear in the urine while the excretion of urea and sulphates remains unaffected; apparently the chloride, being more permeable, is reabsorbed and so only appears to be excreted in less quantity.
The response curve of PD excretion vs purine absorbed is linear.
Forced diuresis should not be used since it does not enhance salicylate excretion and may cause pulmonary edema.
The main reason why acne appears in adolescence seems to be changes in hormonal status which drive sebum excretion.
These drugs act by increasing sodium excretion in the proximal convoluted tubule of the nephron (8).
Insects are attracted to the mouth of the pitcher by a series of glands, yielding a sweet excretion, which occurs on the stem and also on the leaf from the base of the leaf-stalk to the lid and peristome.
They contrast with those of the Oligochaeta and Hirudinea by reason of their frequently close association with the gonads, the same organ sometimes serving the two functions of excretion and conveyance of the ova and spermatozoa out of the body.
When the worn-out cells are broken down, the urates are carried dissolved in the blood to the Malpighian tubes for excretion.
This cellular layer is called the hypodermis; it is protected externally by a cuticle, a layer of matter it itself excretes, or in the excretion of which it plays, at any rate, an important part.
The " sclerites " that make up the skeleton of the insect (which skeleton, it should be remembered, is entirely external) are composed of this chitinous excretion.
It seems likely that the coelomic pore-canals were originally excretory organs, but in the existing Enteropneusta the pore-canals (especially the collar canals) have, as we have seen, acquired new functions or become vestigial, and the function of excretion is now mainly accomplished by a structure peculiar to the Enteropneusta called the glomerulus, a vascular complex placed on either side of the anterior portion of the stomochord, projecting into the proboscis-coelom.
They have appeared independently in connexion with a change in the excretion of nitrogenous waste in Arachnids, Crustacea, and the other classes of Arthropoda when aerial, as opposed to aquatic, respiration has been established - and they have been formed in some cases from the mesenteron, in other cases from the proctodaeum.
Further, it is pointed out by Korschelt and Heider that the hinder portion of the gut frequently acts in Arthropoda as an organ of nitrogenous excretion in the absence of any special excretory tubules, and that the production of such caeca from its surface in separate lines of descent does not involve any elaborate or unlikely process of growth.
This term is usually applied to a semi-solid substance of homogeneous and gelatinous consistence, which results partly from excretion and partly from degeneration of cellular structures, more particularly of the epithelial type.