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What happens to an organ that only receives input from the sympathetic division when sympathetic signals increase?
Activity in the gland or muscle is enhanced.
What happens to an organ that only receives input from the sympathetic division when sympathetic signals decrease?
Activity in the gland or muscle is reduced.
What is the effect of the sympathetic division on merocrine sweat glands?
Increases secretion (for thermoregulation).
What is the effect of the sympathetic division on apocrine sweat glands?
Increases secretion (in response to stress or emotions).
What is the effect of the sympathetic division on piloerector muscles?
Causes contraction, leading to hair standing up (goosebumps).
What is the effect of the sympathetic division on the kidneys?
Decreases urine production by reducing blood flow to the kidneys.