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GI system

Which of following processes is the function of the smooth muscle layer of the digestive
system?

Mixing and propulsion

Which of following processes is the primary function of the mouth?

Ingestion

Which of following processes is the primary function of the villi of the small intestine?

Absorption

Which of the following accessory organs produces a fluid to soften food?

Salivary glands

Which of the following accessory organs produces a fluid that functions to emulsify
dietary fats?

Liver

Which of the following accessory organs stores bile?

Gallbladder

The capability of the GI tract to move material along its length is called
1. Motility
2. Propulsion
3. Digestion
4. Defecation

Both 1 and 2

This layer of the GI tract is composed of areolar connective tissue containing blood and
lymph vessels.

Lamina propria

This layer of the GI tract is composed of areolar connective tissue that binds the mucosa
to the muscularis.

Submucosa

This layer functions by secreting a lubricating fluid.

Serosa

These are composed of prominent lymphatic nodules that function in the immune
response.

MALT

This plexus is located between the longitudinal and circular smooth muscle layers of the
muscularis.

Myenteric plexus

Why do emotions such as anger or fear slow digestion?

Because they stimulate the sympathetic nerves that supply the GI tract

This portion of the peritoneum drapes over the transverse colon and coils of the small
intestine

Greater omentum

This portion of the peritoneum attaches the liver to the anterior abdominal wall and
diaphragm.

Falciform ligament

This portion of the peritoneum is largely responsible for carrying blood and lymph
vessels to the intestines.

Mesocolon

The hard palate
1. is the anterior portion of the roof of the mouth.
2. is formed by the maxillae and palatine bones.
3. is covered by a mucous membrane.

All of these choices

Lateral to the base of the uvula in the mouth, this muscular fold runs posteriorly down
the lateral sides of the soft palate to the pharynx.

Palatopharyngeal arch

In the mouth, the tooth sockets are lined with

Periodontal ligament

Deciduous molars are replaced by

Bicuspids

Which of the following contains skeletal muscle?

Muscularis

How many stages of deglutition are there?

3

This structure of the stomach allows greater distension for food storage.

Rugae

Which of the following secrete hydrochloric acid?

Parietal cells

This cell secretes the hormone that promotes production of hydrochloric acid.

G cell

How long can food stay in the fundus before being mixed with gastric juices?

1 hour

This major duct carries a fluid rich in bicarbonate ions.

Pancreatic duct

Which of the following pancreatic enzymes digests lipids?

Lipase

This is found on the liver and is a remnant of the umbilical cord in a fetus.

Round ligament

This is the principle bile pigment

Bilirubin

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

Storage of bilirubin

Which of the following small intestine cells secrete lysozyme?

Paneth cells

Brunner's glands

Secrete an alkaline mucus

Which of the following enzymes acts to produce monoglycerides as one product?

Lipase

Which of the following pancreatic enzymes acts on glycogen and starches?

Amylase

Which of the following pancreatic enzymes acts on peptide bonds?

Chymotrypsin

This hormone functions to counteract the effect of gastric acid in the small intestine.

Secretin

This hormone is stimulated by high levels of dietary fat in the small intestine

Cholecystokinin

This digestive aid, produced by the stomach, begins digestion by denaturing proteins.

Hydrochloric acid

This structure regulates the flow of material into the colon.

Ileocecal sphincter

Which of the following is NOT a primary function of the large intestine?

Regulation of blood glucose

What is line A pointing to?

42-44 MALT

What layer is composed of areolar connective tissue and epithelium?

42-44 None of these

Which layer contains the lamina propria?

42-44 B

This consists of calcified connective tissue.

45-47 B

What is line F pointing to?

45-47 Cementum

This has an opening called the apical foramen

45-47 G

This is the portion of the stomach that connects to the duodenum.

48-51 D

What does line G point to?

48-51 Pyloric Antrum

This is the area where pyloric stenosis occurs.

48-51 E

What is line I pointing to?

48-51 Fundus

Which of the following cells secrete mucus?

52-55 B

Which of the following cells secretes intrinsic factor?

52-55 C

Which of the following cells secretes gastrin?

52-55 E

Which of the following cells secretes pepsinogen?

52-55 D

Name the structure labeled F

56-59 Gastric pit

Name the structure labeled G

56-59 Gastric glands

Name the structure labeled C

56-59 Parietal cell

Name the structure labeled D

56-59 Chief cell

Name the layer labeled A

60-64 Circular muscle

Name the layer labeled B

60-64 Longitudinal muscle

Name the layer labeled C

60-64 Serosa

Name the layer labeled E

60-64 Mucosa

Name the layer labeled D

60-64 Submucosa

The enzyme produced in the organ labeled C which digests DNA is called

65-80 Deoxyribonuclease

The enzyme produced in the organ labeled C which digests RNA is called

65-80 Ribonuclease

The enzyme, produced in the organ labeled C, that produces fatty acids and
monoglycerides during digestion is called

65-80 Pancreatic lipase

The enzyme, produced in the organ labeled D, that produces both glucose and fructose
as products is called

65-80 sucrase

The enzyme, produced in the organ labeled D, that produces both glucose and galactose
as products is called

65-80 lactase

The enzyme, produced in the organ labeled D, that produces only glucose as a product
is called

65-80 maltase

An enzyme, produced in the organ labeled D, that produces only glucose as a product is
called

65-80 α-dextrinase

The enzyme, active in the organ labeled D, that has starches as a substrate is

65-80 Pancreatic amylase

Which enzyme, active in organ D, has nucleotides as a substrate?

65-80 phosphatases

Which enzyme, active in organ D, has nucleotides as a substrate?

65-80 nucleosidases

Which of the following disorders results in an enlargement of the organ labeled G?

65-80 mumps

Name the disorder caused by a lack of proper enzymatic action in the organ labeled D
resulting in diarrhea, gas and bloating after consumption of dairy products

65-80 lactose intolerance

Which of the following disorders involving the organ labeled F can result from
cholesterol crystallization?

65-80 gallstones

Which of the following disorders involving the organ labeled C can result from alcohol
abuse?

65-80 pancreatitis

Which of the following disorders involving the organ labeled E can result from viruses,
drugs and chemicals such as alcohol?

65-80 hepatitis

Which of the following disorders can occur in the organ labeled B?

65-80 peptic ulcers

When you swallow, which structures rise to close off the nasopharynx?

uvula and soft palate

Which of the following statements is incorrect?

The esophagus produces digestive enzymes.

All of the following may occur in the digestive system as a result of aging EXCEPT

decreased incidence of appendicitis and acute pancreatitis.

How does the digestive system assist the muscular system?

The liver converts lactic acid produced by muscles to glucose.

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