Digestive System Homework Module

Gastrin

G cells of the stomach secrete

inner circular layer and outer longitudinal layer; superior third is skeletal muscle, middle third is mixed skeletal and smooth muscle, inferior third is smooth muscle

Describe the muscular layer of the esophagus

Antibody Production

Each of the following is a function of the liver except

Cementum

The root of a tooth is covered by

??

All of the following are true of the lining of the stomach except that it

mouth

Carbohydrate digestion begins in the

Pepsinogen

Chief cells secrete

Portal Triad

Consists of an interlobular vein, an interlobular artery, and an interlobular bile duct.

Mesentery

The ________ is a double sheet of peritoneal membrane that suspends the visceral organs and carries nerves, lymphatics, and blood vessels.

Internal Anal Sphincter

The ________ is composed of smooth muscle fibers and is not under voluntary control

Common Bile Duct

The ________ is formed by the union of the cystic duct and the common hepatic duct

Neck

The ________ of the tooth marks the boundary between the crown and the root

stratified squamous epithelium

The oral cavity is lined by which type of epithelium? (Module 22.6A)

stratified squamous

The oral mucosa has ________ epithelium.

Jejunum

The villi are most developed in the

20

There are normally a total of ________ primary teeth

hepatic ducts, common hepatic duct, common bile duct, duodenal ampulla and papilla, duodenal lumen

Trace a drop of bile from the hepatic ducts to the duodenal lumen. (Module 22.22B)

Helicobactor pylori

What bacterium is responsible for most peptic ulcers? (Module 22.24C)

lesser omentum

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

falciform ligament

What structure marks the division between the left lobe and right lobe of the liver? (Module 22.20B)

Visceral smooth muscles

What type of muscle cells are arranged in sheets or layers, with adjacent muscle cells electrically connected by gap junctions and mechanically connected by dense bodies?

the small intestine, primarily in the jejunum

Where does most nutrient absorption occur? (Module 23.8B)

increases the sensation of hunger

Which of the following descriptions is not related to cholecystokinin (CCK)?

Central Vein

Which of the following is not a component of the portal triad found at the edges of a liver lobule?

Uvula attaches to the base

Which of the following statements about the tongue is false?

Stimulates gastrin secretion

Which of these descriptions best matches the term gastrin?

Incisors

________ are blade-shaped teeth that function in cutting or clipping.

Molars

________ are teeth with flattened crowns and prominent ridges that are adapted for crushing and grinding.

High-density lipoproteins (HDLs)

________ carry excess cholesterol from peripheral tissues to the liver.