A&P Exam 4

Test 4. Study Your Ass Off
Created May 2, 2012
by powella6
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Side ASide B
The digestive system processes food, extracts nutrients, and eliminates the residue T or F?
True
The enteric nervous system regulates much of the digestive activity but it action depends on...
False
Odor, sight, and taste stimulate salivatory nuclei in the cerebral cortex T or F?
True
Both chemical and mechanical digestion start in the mouth and continue in the stomach T or...
True
Gastric juice consists entirely of water and hydrochloric acid T or F?
False
Absorption of many nutrients starts in the stomachT or F?
False
The liver is the body's largest gland T or F?
True
Both pancreatic juice and bile are secreted into the duodenum T or F?
True
The small intestine begins with the duodenum which is its longest segment T or F?
False
The brush borders of intestinal absorptive cells contain numerous goblet cells T or F?
False
Most fat is digested by pancreatic lipase T or F?
True
Chylomicrons are secreted from the basal surface of the absorptive cells and taken into the...
True
The large intestine is longer than the small intestine T or F?
False
? is the physiological process that moves a nutrient from the outside to the inside of the...
D. absoption
The serous membranes that suspend the stomach and intestine from the abdominal wall are calledA....
A. mesenteries
free
free
These are all accessory organs of the digestive system EXCEPT A. tongueB. liverC. pancreasD....
A. tongue
Each of the following lists some of the tissue layers of the digestive tract. Which one has...
E. mucosa, submucosa, muscularis externa, lamina propria, serosa
Chemical digestion breaks down ? into ?A. proteins; nucleotidesB. amino acids; proteinsC. polysccharides;...
D. nucleic acids; nucleotides
The ? regulates digestive tract motility, secretion, and blood flow, and its neurons are found...
C. enteric nervous system; submucosa and muscularis externa
These are normally found in saliva EXCEPTA. mucusB. lysozymeC. amylaseD. lipaseE. protease
E. protease
The ? gland is an extrinsic salivary gland, whereas the ? gland in and intrinsic salivary...
B. submandibular, lingual
The swallowing center is located in the A. mouthB. oropharynxC. esophagusD. medulla oblongataE....
D. medulla oblongata
The buccal phase of swalloing is under ? control and the pharyngo-esophageal phase is ?A. central...
B. central nervous system; controlled by autonomic reflexes
Acid reflux into the esophagus is normally prevented byA. pharyngeal constrictorsB. the upper...
C. the lower esophageal sphincters
free
free
Hydrochloric acid is secreted by ? cellsA. mucousB. regenerative (stem)C. parietalD. chiefE....
C. parietal
?, which is secreted by ? cells, is necessary for vitamin B12 absorptionA. intrinsic factor;...
A. intrinsic factor; parietal
Pepsinogen is produced by ? and is activated by ?A. chief cells; carbonic anhydrase secreted...
B. chief cells; hydrochloric acid secreted by parietal cells
Why are several digestive enzymes secreted as zymogens?A. because this saves one step in their...
D. so they act only in the stomach lumen and do not digest intracellular proteins
The entertogastric reflex serves toA. relax the stomach in preparation for swallowed food.B....
C. stimulate intestinal motility when there in food in the stomach 
? is a hormone, whereas ? is an enzymeA. enterokinase; pepsinB. gastrin; secretinC. gastrin;...
E. secretin pepsin
? is associated with food stretching the stomach and activating myenteric and vagovagal reflexes,...
B. gastric phase
The organ that stores excess glucose and releases it later into the blood is theA. pancreasB....
A. pancreas
A hepatic (portal) triad consists of A. right, left, and common hepatic ductsB. common...
D. bile ductule, branch of hepatic artery, and branch of hepatic portal vein
The ? synthesizes bile acids by metabolizing ?A. duodenum; neutral fatsB. ileum; bilirubinC....
E. liver; cholesterol
Which of these is NOT a components of pancreatic juice?A. trypsinogenB. chymotrypsinogenC....
E. enterokinase
Which of these nutrients is absorbed by the lacteals of the small intestine?A. triglyceridesB....
B. amino acids
Which of the following enzymes functions at the lowest pH?A. salivary amylaseB. pancreatic...
E. dipeptidase
Which of these is the site of contact digestion?A. gastric pitsB. surface of the gastric mucosaC....
D. brush border of the small intestine
The small intestine has a very large absorptive surface associated with all these structures...
E. rugae
The migrating motor complexA. milks the chyme toward the colonB. allows a bolus to move down...
A. milks the chyme toward the colon
The ? of the small intestine is/are similar to the ? of the stomachA. villi; pyloric glandB....
C. intestinal crypts; gastric pits
Carbohydrate digestion begins in the ?, whereas protein digestion begins in the ?A. liver;...
C. mouth; stomach
? break(s) down ?A. lactase; glucoseB. peptidases; proteinsC. lipases; micellesD. lactose;...
E. nucleases; nucleotides
Amino acids and monosaccharides are absorbed in the ?, and fatty acids are absorbed in the...
E. small intestine; small intestine
Lecithin prepares fats for hydrolysis by formingA. triglycerides, fatty acids, and glycerolB....
D. emulsification droplets
Proteins are digested by different enzymes acting in the following sequenceA. pepsin, trypsin,...
C. trpysin, pepsin, carboxypeptidase, dipeptidase
? transport lipids to the surface of the intestinal absorptive cells, which process them into?A....
C.micelles; fat globules
The three most abundant classes of nutrients areA. carbohydrates, proteins, and mineralsB....
B. fats, proteins, and carbohydrates
The muscle tone of the ? along the colon contracts it lengthwise, causing its walls to bulge...
C. haustra; taeniae coli
Bacterial flora carry out all of the following EXCEPTA. digest most of the proteins we get...
D. digest cellulose
Defecation is stimulated by A. the chemical composition of the fecesB. bacterial flora...
E. stretching of the rectum


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