digestive system chapter 24

Functions of the liver includes

All of these are functions of the liver

Anticipation of eating food causes an increase in secretion of gastric juice. The phase of gastric secret is called the _______ phase.

Cephalic

Gastritis , peptic ulcers and gastric cancer can all be caused by

Helicobacter pylori, a bacterium

Diffusion and active transport are likely to be important in

absorption of food

The formation of HCL in the stomach involves the

active transport of hydrogen ions from parietal cells into the lumen of the stomach

which of the following organs is retroperitoneal?

all of these organs are retroperitoneal (pancreas, ascending colon, duodenum, descending colon)

teeth in adults

are distributed so that there is one canine tooth in each half jaw

The pancreatic islets

are endocrine glands

Lipid-soluble drugs placed under the tongue

are quickly dissolved and absorbed

Which of following would inhibit both gastric secretion and gastric motility?

cholecystokinin (CCK)

Blockage of the ileocecal valve would prevent

chyme from entering the large intestine

which of the following is NOT a type of propulsion in the digestive tract?

deglutition

Which of the following is NOT an accessory organ of the digestive tract?

esophagus

what structure moves food from the pharynx to the stomach

esophagus

the oral cavity

had boundaries that include the lips, palate and cheeks

Nutrient-rich blood from the digestive tract comes to the liver by way of the

hepatic portal vein

Where does bile enter the duodenum

hepatopancreatic ampulla

mastication

increases the surface area of food particles

Duodenal gland secretion prevents

irritation of the duodenal mucosa by acidic chyme and digestive enzymes

The intestinal phase of gastric secretion

is controlled by the entrance of acidic chyme into the duodenum

The gastric phase of gastric secretion

leads to the greatest volume of gastric secretion

Damage to the liver would hamper digestion of

lipids

Bile is produced by cells of the

liver

Which of the following is an accessory organ of the digestive tract

liver

which of following is NOT a function of the small intestne

mastication of food

What is the purpose of segmental contractions of the small intestine?

mixing of intestinal contents

Which layer of the small intestine wall contains cells with microvilli?

mucosa

Beginning at the lumen, the sequence of layers of the digestive tract wall is

mucosa, submucosa, muscularis, serosa

which of the following is correctly matched?

muscularis- responsible for peristalsis

which of the following represents a mismatch in stomach wall structure

muscularis- two layers; both circular

which part of the pharynx is NOT involved with food transport

nasopharynx

Which of the following structures has both endocrine and exocrine tissue?

pancreas

which of the following cell types of the stomach is correctly matched with its function

parietal cells- produce hydrochloric acid

The Abdominal cavity is lined with

parietal peritoneum

the salivary glands located just anterior to the ear are the

parotid glands

Bile secretion is

performed continuously by the liver

The movement of food through the digestive tact is

propulsion

which of the following pairs is mismatched?

pulp cavity- cementum

abdominal organs that lie against the body wall and have no mesenteries are said to be

retroperitoneal

In order to remove a tumor in the muscular tunic of the stomach a surgeon must cut through the

serosa

Where does the majority of nutrient absorption occur?

the jejunum and duodenum

the epiglottis cover the opening into the larynx during

the pharyngeal phase of swallowing

why doesn't the stomach digest itself?

the stomach wall is protected by large amounts of mucus