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Biology 2310

GI system
STUDY
PLAY
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.