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____ Are Hardwood Blocks with Threaded Rods Through Them

question 11

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____ are hardwood blocks with threaded rods through them.


Definitions:

Duodenal Ampulla

A dilation in the duodenum where the pancreatic duct and bile duct empty their contents for digestion.

Anal Canal

Terminal portion of the digestive tract.

Internal Sphincter

A ring of muscle that surrounds and closes a natural bodily passageway, functioning involuntarily.

External Sphincter

A circular muscle that helps control the expulsion of feces from the anal canal or urine from the bladder.

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