For the kidneys of cattle.
The loin, or kidney, is the main excretory organ of the cow. Kidney surface is smooth, left and right. It can be divided into upper and lower ends, anterior and posterior surfaces, and inner and outer edges.
The basic physiological function of the kidneys is to generate urine, from which a variety of water-soluble substances need to be eliminated.? Excretion belongs to the last link in the whole process of material metabolism of the organism, and is one of the most basic life activities of the organism.
The physiological significance of renal urinary activity is, on the one hand, the excretion of various metabolic end-products, as well as drugs and foreign substances entering the body; on the other hand, the volume of body fluids and their components of the excretion of body fluids to retain a variety of body fluids useful for the body's nutrients and important electrolytes.
Expanded Information
Physiological Functions
Secreting urine and excreting metabolic wastes, toxins and drugs. Renal tubules can also secrete and excrete drugs and poisons, such as phenol red, p-aminomalonic acid, penicillins, cephalosporins, etc.; drugs, if combined with proteins, can be excreted through glomerular filtration.
Regulation of water and osmotic pressure in the body, regulating the body's water and osmotic pressure balance is mainly in the renal tubules. The proximal tubule is isotonic reabsorption, an important site for Na+ absorption and H+ secretion.
Regulation of electrolyte concentration, glomerular filtrate contains a variety of electrolytes, when entering the renal tubules, sodium, potassium, calcium, magnesium, bicarbonate, chloride and phosphate ions, most of which are reabsorbed in order to play a role in sustaining life activities.
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