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Biology, 02.07.2019 17:10 ptrlvn01

Defecation
a. is initiated by distension of the wall of the colon.
b. depends on voluntary control of the external sphincter of the anus.
c. depends on the motor impulses from sympathetic pathways.
d. decreases pressure in the rectum.

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Defecation
a. is initiated by distension of the wall of the colon.
b. depends on volunta...

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