At the proximal convoluted tubule, primarily ______ occurs.
Secretion
Reabsorption
Filtration
Excretion
Question 28 (2 points)
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During the action of the micturition reflex, ______ fibers cause the detrustor muscle to contract, the internal urethral sphincter to ______, and the external urethral sphincter to ______.
sympathetic; relax; relax
parasympathetic; relax; contract
sympathetic; relax; contract
parasympathetic; relax; relax