Question 1

Why does the superior part of the esophagus contain skeletal muscle instead of smooth muscle?

Accepted Answer

A) The first phase of swallowing is under involuntary control. 
B) The second phase of swallowing is under voluntary control. 
C) The first phase of swallowing is under voluntary control. 
D) The second phase of swallowing is under involuntary control. 
A) The first phase of swallowing is under involuntary control. 
B) The second phase of swallowing is under voluntary control. 
C) The first phase of swallowing is under voluntary control. 
D) The second phase of swallowing is under involuntary control.

Question 2

Most of the water that enters that digestive tract is removed by the body in urine.

Accepted Answer

A) True 
 B)False

Question 3

Match the function with its appropriate description.
-absorption

Accepted Answer

A) movement of molecules from digestive tract into blood 
B) chewing of food 
C) muscular contractions that propel food 
D) removal of undigested wastes from body 
E) breakdown of organic molecules with digestive enzymes 
A) movement of molecules from digestive tract into blood 
B) chewing of food 
C) muscular contractions that propel food 
D) removal of undigested wastes from body 
E) breakdown of organic molecules with digestive enzymes

Question 4

The intestinal phase of gastric secretion

Accepted Answer

A) is controlled by the entrance of acidic chyme into the duodenum. 
B) leads to increased gastric secretion if duodenal pH falls below 2. 
C) only stimulates gastric secretion. 
D) will decrease gastric secretion when gastrin is released by the duodenum. 
E) is controlled by the entrance of alkaline material into the small intestines. 
A) is controlled by the entrance of acidic chyme into the duodenum. 
B) leads to increased gastric secretion if duodenal pH falls below 2. 
C) only stimulates gastric secretion. 
D) will decrease gastric secretion when gastrin is released by the duodenum. 
E) is controlled by the entrance of alkaline material into the small intestines.

Question 5

Match the function with its appropriate description.
-chemical digestion

Accepted Answer

A) movement of molecules from digestive tract into blood 
B) chewing of food 
C) muscular contractions that propel food 
D) removal of undigested wastes from body 
E) breakdown of organic molecules with digestive enzymes 
A) movement of molecules from digestive tract into blood 
B) chewing of food 
C) muscular contractions that propel food 
D) removal of undigested wastes from body 
E) breakdown of organic molecules with digestive enzymes

Question 6

Diffusion and active transport are likely to be important in

Accepted Answer

A) mastication of food. 
B) absorption of food. 
C) elimination of undigested food. 
D) propulsion of food through the digestive tract. 
E) mixing of food. 
A) mastication of food. 
B) absorption of food. 
C) elimination of undigested food. 
D) propulsion of food through the digestive tract. 
E) mixing of food.

Question 7

Match the process or term with the best description.
-deglutition

Accepted Answer

A) swallowing 
B) chewing 
C) ball of food 
D) semifluid material 
E) phagocytosis
, 
A) swallowing 
B) chewing 
C) ball of food 
D) semifluid material 
E) phagocytosis
,

Question 8

Arrange the following in order from largest to smallest: (1)dipeptide
(2)protein
(3)amino acid
(4)polypeptide

Accepted Answer

A) 3,1,4,2 
B) 4,1,2,3 
C) 2,4,1,3 
D) 1,2,3,4 
E) 2,4,3,1 
A) 3,1,4,2 
B) 4,1,2,3 
C) 2,4,1,3 
D) 1,2,3,4 
E) 2,4,3,1

Question 9

The pancreatic islets

Accepted Answer

A) are found in the wall of the stomach. 
B) excrete mucus. 
C) produce digestive enzymes. 
D) are exocrine glands. 
E) are endocrine glands. 
A) are found in the wall of the stomach. 
B) excrete mucus. 
C) produce digestive enzymes. 
D) are exocrine glands. 
E) are endocrine glands.

Question 10

Which of the following will stimulate intestinal motility?

Accepted Answer

A) distension of the intestinal wall 
B) low pH 
C) presence of amino acids 
D) All of the choices will stimulate intestinal motility 
A) distension of the intestinal wall 
B) low pH 
C) presence of amino acids 
D) All of the choices will stimulate intestinal motility

Question 11

Match the process or term with the best description.
-Kupffer cells

Accepted Answer

A) swallowing 
B) chewing 
C) ball of food 
D) semifluid material 
E) phagocytosis
, 
A) swallowing 
B) chewing 
C) ball of food 
D) semifluid material 
E) phagocytosis
,

Question 12

A proteolytic enzyme secreted by the pancreas is

Accepted Answer

A) ribonuclease. 
B) chymotrypsin. 
C) amylase. 
D) enterogastrone. 
E) pancreatic lipase. 
A) ribonuclease. 
B) chymotrypsin. 
C) amylase. 
D) enterogastrone. 
E) pancreatic lipase.

Question 13

Segmental contractions are mixing contractions that occur predominantly in the _________________.

Accepted Answer

A) oral cavity 
B) large intestine 
C) esophagus 
D) stomach 
E) small intestine 
A) oral cavity 
B) large intestine 
C) esophagus 
D) stomach 
E) small intestine

Question 14

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

Accepted Answer

A) storage 
B) protein digestion 
C) absorption of aspirin 
D) segmental contractions 
A) storage 
B) protein digestion 
C) absorption of aspirin 
D) segmental contractions

Question 15

Which of the following is associated with the tongue?

Accepted Answer

A) uvula 
B) constrictor muscles 
C) papillae and taste buds 
D) periodontal ligament 
E) fauces 
A) uvula 
B) constrictor muscles 
C) papillae and taste buds 
D) periodontal ligament 
E) fauces

Question 16

The muscularis layer in the wall of the digestive tract is

Accepted Answer

A) skeletal muscle throughout the tract,especially in the large intestine. 
B) the layer of the digestive tract wall that contains capillaries. 
C) in direct contact with the food that is consumed. 
D) composed of a layer of circular smooth muscle fibers and a layer of longitudinal smooth muscle fibers. 
E) connective tissue and the peritoneum. 
A) skeletal muscle throughout the tract,especially in the large intestine. 
B) the layer of the digestive tract wall that contains capillaries. 
C) in direct contact with the food that is consumed. 
D) composed of a layer of circular smooth muscle fibers and a layer of longitudinal smooth muscle fibers. 
E) connective tissue and the peritoneum.

Question 17

Match the enzyme or hormone with the organ that produces it.
-trypsin

Accepted Answer

A) salivary glands 
B) stomach 
C) liver 
D) small intestine 
E) pancreas 
A) salivary glands 
B) stomach 
C) liver 
D) small intestine 
E) pancreas

Question 18

When chyme enters the duodenum,____ is released and stimulates the pancreas to secrete bicarbonates.

Accepted Answer

A) gastrin 
B) secretin 
C) insulin 
D) cholecystokinin 
E) glucagon 
A) gastrin 
B) secretin 
C) insulin 
D) cholecystokinin 
E) glucagon

Question 19

Blockage of the ileocecal valve would prevent

Accepted Answer

A) pancreatic juice from entering the duodenum. 
B) bile from entering the duodenum. 
C) lymph from entering the jejunum. 
D) chyme from entering the ileum. 
E) chyme from entering the large intestine. 
A) pancreatic juice from entering the duodenum. 
B) bile from entering the duodenum. 
C) lymph from entering the jejunum. 
D) chyme from entering the ileum. 
E) chyme from entering the large intestine.

Question 20

Why doesn't the stomach digest itself?

Accepted Answer

A) The stomach wall lacks proteins so enzymes won't attack it. 
B) The digestive enzymes in the stomach aren't efficient enough. 
C) The stomach lining is too tough to be digested. 
D) The stomach wall is protected by large amounts of mucus. 
E) The stomach is protected by HCl. 
A) The stomach wall lacks proteins so enzymes won't attack it. 
B) The digestive enzymes in the stomach aren't efficient enough. 
C) The stomach lining is too tough to be digested. 
D) The stomach wall is protected by large amounts of mucus. 
E) The stomach is protected by HCl.

Exam 24: Digestive System

Why does the superior part of the esophagus contain skeletal muscle instead of smooth muscle?

Most of the water that enters that digestive tract is removed by the body in urine.

Match the function with its appropriate description. -absorption

The intestinal phase of gastric secretion

Match the function with its appropriate description. -chemical digestion

Diffusion and active transport are likely to be important in

Match the process or term with the best description. -deglutition

Arrange the following in order from largest to smallest: (1)dipeptide (2)protein (3)amino acid (4)polypeptide

The pancreatic islets

Which of the following will stimulate intestinal motility?

Match the process or term with the best description. -Kupffer cells

A proteolytic enzyme secreted by the pancreas is

Segmental contractions are mixing contractions that occur predominantly in the _________________.

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

Which of the following is associated with the tongue?

The muscularis layer in the wall of the digestive tract is

Match the enzyme or hormone with the organ that produces it. -trypsin

When chyme enters the duodenum,____ is released and stimulates the pancreas to secrete bicarbonates.

Blockage of the ileocecal valve would prevent

Why doesn't the stomach digest itself?

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Nutrition,metabolism,and Temperature Regulation

Urinary System

Water,electrolyte,and Acid-Based Balance

Reproductive System

Development,growth,aging,and Genetics

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