Explain how tubular reabsorption and tubular secretion are nearly opposite processes
What will be an ideal response?
Tubular reabsorption is the process by which the body reclaims substances within the filtrate that it wants to keep. Most reabsorption is an active process using membrane carriers. Substances that are typically reabsorbed include water, amino acids, glucose, and ions. Most reabsorption occurs in the proximal convoluted tubule of the nephron and the substances are moved into the blood of the peritubular capillaries. Tubular secretion is the opposite process. With secretion, substances such as hydrogen ions, potassium ions, and creatinine are removed from the peritubular capillaries into the tubules to be eliminated in urine.
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Fill in the blank with correct word.
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A) isotonic solution. B) pinocytotic solution. C) hypotonic solution. D) monotonic solution. E) hypertonic solution.
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A) hold the discs in place B) prevent hyperextension of the spine C) hold the spine erect D) protect the spinal cord
In general, parasympathetic preganglionic fibers are ________ and postganglionic fibers are ________
A) long; short B) short; long C) long; long D) short; short