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NCSU bio 240 Lab exam 4 Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution

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NCSU bio 240 Lab exam 4 Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution

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  • June 19, 2024
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  • 2023/2024
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  • ncsu bio 240 lab exam 4 questions with 100 actua

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NCSU bio 240 Lab exam 4
6 main functions of digestive system - ANS-ingestion, motility, secretion, digestion,
absorbtion, elimination

ingestion, step 1 - ANS-the introduction of solid and liquid food to the oral cavity.

motility - ANS-chewing, the term for voulentary and invoulentary muscular contractions
for mixing food in mouth

secretion - ANS-producing and releasing substances such as digestive enzymes, acid,
bile, into the gastrointestinal tract. these secretions facilitate digestion

digestion - ANS-breakdown of food to smaller units that may be absorbed by GI tract

mechanical digestion - ANS-physcially broken down by chewing or contraction to make
smaller peices

chemical digestion - ANS-when enzymes break chemical bonds to change larger
complex molecules into smaller ones
chemcially breaking down food

absorbtion - ANS-membrane transport of digestive moelcues such as eletrolyes,
vitamins or water from the tract into blood or lymph.

elimination - ANS-get rid of indigestible stuff that cant be absorbed

parietal peritonsum - ANS-serious membrane that lines the inner surface of abdominal
wall

visceral peritoneum - ANS-the portion of the serious membrane that surrounds the
internal organs

peritoneal cavity - ANS-lubed fluid cavity between visceral and parietal peritonsum

intraperitoneal organs - ANS-organs completly surrounded by visceral peritoneum
(stomach, most of SI and parts of LI)

, retroperitoneal organs - ANS-organs outside the parietal peritoneum (most of
duodenum, pancreas, ascending and decending colon and rectum)

mesentery - ANS-double layer of peritonseum that supports, suspends, and stabilizes
the intraperitoneal GI tract organs

greater omentum - ANS-extends inferiorly from greator curve, and covors most of
abdomen organs
connective tissue called "fatty apron"

lesser omentum - ANS-connects from lesser to the duodenum

falciform ligament - ANS-flat, thin, cresent shaped peritoneal fold that attatches liver to
the internal surface of the anterior abdomen wall.

mesentery proper - ANS-fan shaped fold of peritoneum that suspends most of the small
intestine from the internal surface of the posterior abdomen wall.

mesocolon - ANS-fold of the peritoneum that attaches parts of the large intestine to the
posterior abdominal wall
in distinct sections

sense receptors - ANS-these are embedded throughout the mucosa and submucosa of
the GI tract

baroreceptors - ANS-detect stretch or pressure of a particular region

chemoreceptors - ANS-detect precense of specific substances of passing contents

gastrin, secretin, and cholecytokinin - ANS-three primary hormons that are regulated in
stomach

bolus - ANS-when food becoems mixed with intestinal materials to form a wet mass
saliva helps form this

pharynx - ANS-where swallowing of the blus occurs
mucus secreted in the saliva to provide lubrication

esophagus - ANS-where the bolus goes after the pharynx until it gets to the stomach

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