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This term means entry of substances into the body from the filtrate?
secretion
What substances are removed from the filtrate and reabsorbed by the capillaries?
red blood cells
Would the passive movement of substances occur if the interstitial solute concentration was the same as the filtrate solute concentration?
No. Solutes move down their concentration gradient, from areas of high concentration to areas of lower concentration.
What is Active transport of substances from the blood into the nephron called?
Tubular secretion
Does secretion occur in the kidney?
Proximal and Distal tubes
This term means entry of substances into the body from the filtrate?
secretion
How does Tubular re-absorption and tubular secretion differ?
secretion adds material to the filtrate; reabsorption removes materials from the filtrate
Is a filtrate pure?
A filtrate doesn't contain insoluble substances but can contain soluble substances.
Explain the mechanism of tubular secretion and its importance in the urine formation process?
"Tubular secretion is the reverse process of tubular reabsorption. Substances such as hydrogen and potassium ions and creatinine move either from the blood of the peritubular capillaries through the tubular cells or from the tubular cells into the filtrate to be disposed of in the urine. This process is important for the disposal of substances not ready in the filtrate and as a device for controlling blood pH" Page 615 in Human Anatomy & Physiology Laboratory Manual
This is a nephron process that results in a substance in blood entering the already formed filtrate?
secretion
Where is the primary site at which tubular secretion occur?
Tubular secretion is a part of urine formation occurring within the nephrons of the kidneys. After glomerular filtration, in which fluids from the blood pass into the glomerular capsule of the renal tubule, the filtrate is subject to tubular reabsorption and tubular secretion within the convoluted tubules and collecting ducts of the nephrons.
Define tubular secretion?
Process whereby selected molecules are actively transported from the blood into the filtrate Process whereby selected molecules are actively transported from the blood into the filtrate
What are two substances that are found in the filtrate but not in the urine?
Ions and nutrients
What substances may be in the filtrate after the soap was filtered out?
Saponification refers to the process of producing soap, usually from fats and lye. The substances that are left in the filtrate after the soap is filtered out are glycerol and excess salt.
What substances are removed from the filtrate and reabsorbed by the capillaries?
red blood cells
What is themain functionof the proximalconvolutedtubules in urineformation?
reabsorption of most of the required substances from the filtrate
What are two substances that are routinely found in filtrate but not in the urine product?
Ions and nutrients
