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pancreas

organ that secretes the most potent digestive enzymes

liver

organ that secretes bile

stomach

the organ that secretes hydrochloric acid and pepsinogen

duodenum

most digestion and absorption takes place in this part of the small intestine

chyme

the stomach mashes food into a paste called _____________

vagus

the primary autonomic nerve that supplies the GI tract

esophagus

food tube; from pharynx to stomach

colon

ascending, transverse, descending, sigmoid

cecum

the appendix attaches to this structure

ileocecal

valve between the small intestine and large intestine

LES

gastric reflux involves this valve

disaccharidases

sucrase, lactase, maltase

bile

mechanically breaks a large fat globule into many smaller fat globules

lipase

the enzyme that splits fats into fatty acids and glycerol

protease(s)

trypsinogen and chymotrypsinogen

HCl

responsible for the gastric pH

intrinsic factor

a deficiency causes pernicious anemia

cholecystokinin

hormone secreted by the walls of the duodenum; stimulates the pancreas to secrete potent digestive enzymes

secretin

hormone secreted by the walls of the duodenum; stimulates the pancreas to secrete a bicarbonate-rich secretion

gastrin

hormone secreted by the stomach; causes the secretion of HCl

amylase(s)

enzymes that digest carbohydrates/starches to the disaccharide stage

Which of the following is not true of the salivary glands?

secrete the most important of the digestive enzymes

The epiglottis

is a hollow tube that carries food from the pharynx to the stomach.

The stomach

delivers chyme to the duodenum at the proper rate.

With which word is deglutition most associated?

swallowing

Paralytic ileus is the

slowing or cessation of peristalsis.

Which of the following best describes the omentum and the mesentery?

serous membrane

Which of the following is not a function of the stomach?

synthesis of plasma proteins especially albumin

Which of the following is not descriptive of bile?

classified as a lipase

Lipases, proteases, and amylases are

digestive enzymes.

Fat digestion is accomplished by

bile and lipase.

The gallbladder

contracts in response to cholecystokinin.

Which of the following is not a function of the liver?

secretes cholecystokinin and secretin

Which of the following best describes emulsification?

A large fat globule is mechanically broken into smaller fat globules.

Which of the following organs or structures is essential to life (can't live without it)?

liver

The pancreas

secretes the most potent digestive enzymes.

Which of the following is least related to the appendix?

regulates the rate at which the contents of the ilium are delivered to the cecum

The duodenum is most concerned with

digestion and absorption.

The common bile duct

empties bile into the duodenum.

Relaxation of the sphincter of Oddi allows

bile to enter the duodenum from the common bile duct.

An amylase and disaccharidase both

digest carbohydrates.

The canaliculi, hepatic duct, and the cystic duct

carry bile.

The digestive end products are absorbed into the

portal circulation.

Trypsin is

proteolytic, pancreatic, digestive

Which of the following is most related to the small intestine?

duodenum, jejunum, and ileum

This chemical aid unravels dietary protein and decreases bacteria in the stomach.

HCl

Ptyalin is

salivary amylase.

Which of the following is (are) true of cholecystokinin (CCK)?

secreted by the walls of the duodenum in response to the presence of fat, stimulates the gallbladder to contract, thereby delivering bile to the duodenum, also stimulates the pancreas to secrete digestive enzymes

The vagus nerve

is the most important nerve of the digestive tract.

Which drug action increases gut motility and is therefore used in the treatment of paralytic ileus?

activates muscarinic receptors

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