Chapter 24 - Digestive System HW

The layer of loose connective tissue that directly supports the digestive epithelium is the:

Lamina Propria

Waves of muscular contractions that propel the contents of the digestive tract are called…

Peristalsis

The lamina propria and mucous epithelium are components of the:

Mucosa

Contraction of the ________ alters the shape of the intestinal lumen and moves epithelial pleats and folds.

Muscularis mucosa

The ________ are double sheets of peritoneal membrane that suspend the visceral organs and carry nerves, lymphatics, and blood vessels.

Mesenteries

What provides access for blood vessels entering and leaving the liver?

Lesser omentum

The oral mucosa is a ________ epithelium.

Stratified squamous

Which accessory organ of the digestive system does not produce any enzymes or digestive secretions?

Gallbladder

The movement of nutrients from the digestive tract lumen across the epithelium is called…

Absorption

The functions of the oral cavity include all of the following except:

• digestion of carbohydrates.

• sensory analysis of material before swallowing.

• mechanical processing of food.

• absorption of monosaccharides.

• lubrication.

Absorption of monosaccharides

________ pair(s) of salivary glands secrete into the oral cavity.

Three

Functions of the tongue include all of the following except:

• aiding in speech.

• sensory analysis of food.

• manipulation of food.

• separating the oropharynx from the nasopharynx.

• mechanical processing of food.

Separating the oropharynx from the nasopharynx.

The mineralized matrix of the tooth that is similar to bone is

Dentin

The part of a tooth that contains blood vessels and nerves is the:

Pulp Cavity

In most cases, the mumps is a viral infection of the ________ glands.

Parotid

The dangling process that aids in keeping food out of the nasopharynx is known as the

Uvula

Which of the processes below occurs during the buccal phase of deglutition?

• of the upper esophageal sphincter

• folding of the epiglottis to cover the glottis

• passing of bolus through the palatopharyngeal arch

• elevation of the uvula and soft palate to block passage into the nasopharynx

Elevation of the uvula and soft palate to block passage into the nasopharynx

Which muscle(s) are responsible for pushing the bolus towards the esophagus?

Pharyngeal constrictors

Upon swallowing, food moves from the mouth directly into the

Oropharynx

To which region of the stomach does the esophagus connect?

Cardia

The enzyme pepsin digests….

Proteins

D cells release ________, which inhibits the release of gastrin.

Somatostatin

The fusion of the common hepatic duct and the cystic duct forms the:

Bile duct

Blockage of the common hepatic duct would interfere with digestion of:

Fats

A drug that blocks the action of the hormone cholecystokinin would affect all of the following except:

• relaxation of the hepatopancreatic sphincter.

• the composition of pancreatic secretions.

• the delivery of bile.

• digestion of lipids and proteins.

• absorption of water in the large intestines.

Absorption of water in the large intestines

Tom has hepatitis, an inflammation of the liver. Which symptom would you expect to observe in Tom?

Jaundice

Bile salts aid in the digestion of fats by ________ large fat droplets.

Emusifying

The enzyme alpha-amylase that digests polysaccharides is secreted by the __________.

Pancreas

Peyer's patches are characteristic of the

Ileum.

An intestinal hormone that stimulates the release of insulin from the pancreatic islet cells is:

Gastric Inhibitory Peptide (GIP)

A surgical procedure to promote rapid weight loss is removal of most of the:

Jejunum

Powerful peristaltic contractions that occur a few times each day in the colon are called:

Mass Movements

Approximately the last 15 cm of the digestive tract is the

Rectum

Haustra are:

Expansible pouches of the colon

If digestion of a carbohydrate results in equal amounts of glucose and galactose, this carbohydrate is probably:

Lactose