The Digestive System - Davis School District / Overvie © 2006 Pearson Education, Inc., publishing as Benjamin Cummings The esophagus is a part of the _____ while the pancreas is considered

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings

The Digestive System


The esophagus is a part of the ______ while the

pancreas is considered to be a/an _______ when it

comes to the digestive system.

a. alimentary canal… accessory digestive

organ

b. stomach… propulsion organ

c. accessory organs… alimentary canal

component

d. pharynx… mechanical digestive organ


Peristalsis is part of which digestive process?

a. absorption

b. ingestion

c. propulsion

d. chemical digestion


All of the following are part of the alimentary canal

except:

a. pharynx

b. esophagus

c. small intestine

d. tongue


The fingerlike projection of the intestinal mucosa are

called:

a. rugae

b. plicae circularis

c. brush borders

d. villi


Which of the following is not part of the large intestine?

a. cecum

b. appendix

c. ileum

d. sigmoid colon


The pocket-like sacs of the large intestine are called:

a. teniae coli

b. haustra

c. epiploic appendages

d. cecae


Amylase allows us to digest:

a. carbohydrates

b. proteins

c. fats

d. all of these


Which tissue layer of the alimentary canal is also

known as the visceral peritoneum?

a. submucosa

b. muscularis

c. serosa

d. mucosa


The teeth used to tear food are the:

a. incisors

b. molars

c. canines

d. premolars


The esophageal hiatus is found here:

a. esophagus

b. stomach

c. diaphragm

d. pharynx


Saliva is composed mainly of:

a. water

b. amylase

c. lingual lipase

d. mucin


The majority of absorption occurs in the ________.

a. stomach

b. small intestine

c. large intestine

d. mouth


The gastric cells that secrete pepsinogen are the:

a. mucous neck cells

b. parietal cells

c. chief cells

d. enteroendocrine cells


Choose the answer that lists the 4 layers of the wall of

the alimentary canal in the appropriate order from

innermost to outermost.

a. mucosa, submucosa, muscularis, serosa

b. submucosa, mucosa, serosa, muscularis

c. serosa, mucosa, muscularis, submucosa

d. muscularis, submucosa, serosa, mucosa


Chemical digestion first starts in the ______.

a. mouth

b. stomach

c. small intestine

d. large intestine


The layer that gives teeth their general shape is the

______.

a. enamel

b. pulp

c. dentin

d. gingiva


______ involves over 22 muscle groups and includes the

voluntary, pharyngeal, esophageal phases.

a. Mastication

b. Bolus formation

c. Deglutition

d. Peristalsis


The stomach is able to expand nearly 100 times its

empty volume partly due to ______ in its walls.

a. greater curvature

b. rugae

c. greater omentum

d. fundus


When your stomach growls in response to an ad on TV

for food, the ______ phase of gastric secretion is

initiated.

a. cephalic

b. gastric

c. intestinal

d. gastrin


The ______ cells are responsible for HCl production.

a. goblet

b. mucous

c. parietal

d. chief


The ______ in the small intestine have a similar

structure and function to the ______ in the stomach.

a. gastric pits… intestinal glands

b. intestinal glands… gastric pits

c. goblet cells… enteroendocrine cells

d. brush border… rugae


Why is the small intestine well adapted for nutrient

absorption?

a. acid secretions from the stomach are neutralized in

the duodenum

b. CCK is released from the duodenum to promote

liver and pancreatic secretion

c. the interior of the small intestine has a huge surface

area (plicae circulares, villi and microvilli)

d. the small intestine is very long and thin which

encourages nutrients to diffuse


In terms of digestion, the large intestine’s greatest

contribution is

a. exposing the chyme to the rich assortment

of pancreatic enzymes through the process

of segmentation.

b. absorption of all primary nutrients.

c. absorption of water.

d. regulation of gastric motility.


BONUS:

In general, parasympathetic inputs to the gut are

______ while sympathetic inputs are ______.

a. stimulatory… inhibitory

b. rapid… long lasting

c. inhibitory… stimulatory

d. hormonal… neural


BONUS:

Why does your mouth suddenly “go dry” when you are

about to deliver a presentation to a large crowd?

a. parasympathetic activity stimulates

salivation

b. parasympathetic activity inhibits

salivation

c. sympathetic activity stimulates salivation

d. sympathetic activity inhibits salivation

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The Digestive System - Davis School District / Overvie © 2006 Pearson Education, Inc., publishing as Benjamin Cummings The esophagus is a part of the _____ while the pancreas is considered