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Digestion (Ch. 24) Test

Enter the letter for the matching Answer
incorrect
1.
defecation
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2.
intraperitoneal/peritoneal organs
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3.
the musclaris externa layers are
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4.
name the typical digestive mucosas sublayers
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5.
propulsion
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6.
receptors initiate reflexes that
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7.
the major absorption site is the
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8.
the serous fluid
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9.
peritoneum
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10.
absorption
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11.
@#$%^&*()_
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12.
MALT
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13.
name the four basic tunics of the alimentary canal from the lumen outward
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14.
mesentery
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15.
the submucosa
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16.
the slippery mucus it produces protects certain digestive organs from
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17.
explain absorption in the mucosa
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18.
peristalsis mucosae
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19.
two things that apply tot eh regulatory mechanisms
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20.
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A.
mucosa, submucosa, muscularis externa & serosa
B.
passage of digested end products (+ vitamins, minerals & water) fm the lumen of th eGI tract into the blood or lymph; to occur substances must first enter the mucosal cells by active or passive transort processes
C.
eliminates indigestible substances from the body via the anus in the form of feces
D.
being digested themselves by enzymes working within their cavities & eases food passage along the tract
E.
digestive organs (like the stomach) that keep their mesentery & remain in the peritoneal cavity
F.
789789789678978960#@$&*()_
G.
most extensive of the serous membranes
H.
double layer of peritoneum -- a sheet of two serous membranes fused back to back-- that extends tot he digestive organs from the body wall; provide routes for blood vessels, lymphatics & nerves to reach the digestive visceral; they also hold organs in pla
I.
external tot he mucosa; moderately dense connective tissue containing blood & lymphatic vessels, lymph nodules & nerve fibers; enables the stomach to regain its normal shape after temporarily storing a large meal
J.
(1) activate or inhibit glands that secrete digestive juices into the lumen or hormones into the blood or (2) mix lumen contents & move them along th elength of the tract by stimulating the smooth muscle of the GI tract walls
K.
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L.
lubricates the mobile digestive organs & allows them to glide easily across one anothe & alon the body wall as they cary outh their digestive activites
M.
1. digestive activity is provoked by a range of mechancial & chemical stimuli; controls of digestive activity are both extrinsic & intrinsic
N.
(1) a lining epithelium (2) a lamina propria (#) a muscularis mucosae
O.
absorption of the end products of digestion into the blood
P.
the mucosa-associated lymphatic tissue are importanct in the defense against bacteria & other pathogens, which have rather free access to our digestive tract
Q.
moves food through the alimentary canal; swallowing & peristalsis
R.
the inner circular layer & an oter longitudinal layer of smooth muscle cells
S.
small intestine
T.
is external tot he lamina propria, a scant layer of smoth muscle cells that produces local movements of the mucosa; Ex, twitching of this muscle layer dislodges food particles that have adhered tot eh mucosa
Type the Question that corresponds to the displayed Answer.
incorrect
21.
covers the external surfaces of most digestive organs & is continuous with the parietal peritoneum
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22.
major means of propulsion; involves alternate waves of contraction & relaxation of muscles in the organ walls; main effect is to squeeze food from one organ to the next, but some mixing occurs as well
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23.
the alimentary canals own in-house nerve supply which communicate widely w. each other to regulate digestive system activity;constitute the bulk of the two mj intrinsic nerve plexuses found within the walls of the alimentary cnal; submucosal & myenteric n
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24.
initiated by stimuli arising within or outside the GI tract & involve CNS centers & extrinsic autonomic nerves
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25.
taking food into the digestive tract, usualy via the mouth
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26.
occupies the submucosa & chiefly regulates the activity of glands & smooth muscle in the mucosa tunic
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27.
innermost layer; lines the lumen of the alimentary canal from mouth to anus; 3 major functions secretion, absorption & protection
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28.
is between the two peritoneums; is a slitlike potential space containing fluid secreted by the srous membranes
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29.
mushroom shaped; scattered widely; each has a vascular core that gives reddish hue
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30.
lies between the circular & longitudinal layers of smooth muscle of the muscularis externa; provide the mj nerve supply tot he G

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