1) Which of the following is an accessory organ of digestion?

A) stomach

B) liver

C) spleen

D) colon

E) esophagus

2) Ingestion refers to the

A) progressive dehydration of indigestible residue.

B) input of food into the digestive tract through the mouth.

C) chemical breakdown of food.

D) absorption of nutrients in the gut.

E) mixing of nutrients with digestive enzymes.

3) The lamina propria is a component of the

A) serosa.

B) muscularis.

C) submucosa.

D) mucosa.

E) adventitia.

4) Which layer of the digestive tract consists of dense irregular connective tissue?

A) submucosa

B) muscularis externa

C) lamina propria

D) muscularis mucosae

E) mucosa

5) The oral cavity, pharynx, esophagus, and anus are lined by

A) pseudostratified ciliated columnar epithelium.

B) cuboidal epithelium.

C) stratified squamous epithelium.

D) simple epithelium.

E) simple columnar epithelium.

6) The movement of small organic molecules, electrolytes, vitamins, and water across the digestive epithelium and into the intestinal fluid of the digestive tract is called

A) secretion.

B) ingestion.

C) digestion.

D) absorption.

E) excretion.

7) Which of the following consists of double sheets of serous membrane and provides a pathway for blood vessels, nerves, and lymphatic vessels?

A) lamina propria

B) serosa

C) adventitia

D) submucosa

E) mesenteries

8) The layer of the digestive tract, which underlies the mucosal epithelium and consists of areolar connective tissue, is the

A) lamina propria.

B) submucosa.

C) muscularis.

D) serosa.

E) adventitia

9) The muscularis externa layer contains nerves referred to as the

A) muscularis nerves.

B) submucosal plexus.

C) enteric nerves.

D) myenteric plexus.

E) circular plexus.

10) The release of water, acids, enzymes, and buffers by the digestive epithelium is called ________.

A) digestion

B) secretion

C) excretion

D) absorption

E) ingestion