Nursing 105 Exam 1 Questions with Correct

Nursing 105 Exam 1 Questions with Correct Answers 100% Verified Peristalsis is necessary to make it possible for people to _____ food.

• chew
• digest
• swallow
• smell and taste - Correct Answer C

An example of mechanical digestion includes

• activity of salivary amylase in the mouth.
• churning and mixing of food in the stomach.
• action of bile breaking fats into smaller droplets.
• effects of secretin in stimulating the pancreas to release bicarbonate. - Correct Answer B

Valves to control the movement of food in and out of the stomach are called

• reflux regulators.
• peristalsis muscles.
• sphincter muscles.
• segmentation muscles. - Correct Answer C

A substance that works only on a specific class of nutrient is called a(n)

• bolus.
• chyme.
• gastrin.
• enzyme. - Correct Answer D 1 / 4

Chemicals that act as messengers are called

• proteins.
• hormones.
• enzymes.
• nerve impulses. - Correct Answer B

The action of salivary amylase in the mouth is an example of

• chemical digestion.
• chewing.
• mechanical digestion.
• peristalsis and segmentation. - Correct Answer A

Mechanical breakdown of food is a function of the

• large intestine.
• liver and pancreas.
• mouth and stomach.
• esophagus and mouth. - Correct Answer C

A bolus is a ball of

• masticated food ready to be swallowed.
• fat emulsified with bile and intestinal secretions.
• mucus that helps move food along the gastrointestinal tract.
• indigestible fiber mixed with the waste products of digestion. - Correct Answer A

Gastrin is a(n)

• hormone that allows glucose to enter cells. 2 / 4

• enzyme that assists protein digestion.
• hormone needed for reproductive functions.
• hormone that increases the release of gastric juices. - Correct Answer D

The small intestine is the major site of

• digestion and denaturation.
• segmentation and excretion.
• digestion and absorption.
• peristalsis and mechanical digestion. - Correct Answer C

The villi of the small intestine increase its capacity for

• digestion.
• absorption.
• excretion.
• elimination. - Correct Answer B

The absorptive cells of the villi are covered by

• hairlike projections called microvilli.
• hormones that control digestive processes.
• enzymes that speed absorption of nutrients.
• layers of circular and longitudinal muscle. - Correct Answer A

Secretions of the pancreas neutralize the

• acidic chyme entering the duodenum.
• acidic chyme leaving the duodenum.
• bolus flowing down the esophagus.
• low-density lipoproteins leaving the liver. - Correct Answer A 3 / 4

Release of digestive secretions into the small intestine is caused by

• enzymes that are released when food enters the stomach.
• enzymes that are released when food enters the small intestine.
• hormones that are released when food enters the stomach.
• hormones that are released when chyme enters the small intestine. - Correct Answer D

If the large intestine did not carry out its main function, feces would be

• alkaline.
• acidic.
• liquid.
• very dry. - Correct Answer C

The esophagus is a structure that

• produces and releases digestive enzymes but not hormones.
• does not produce digestive enzymes but does release hormones.
• does not produce or release digestive enzymes or hormones.
• produces only small amounts of digestive enzymes or hormones. - Correct Answer C

The mouth, stomach, small intestine, and colon describe the

• order in which food travels during reverse peristalsis.
• pathway blood travels after leaving the liver.
• pathway of hormones that release intestinal secretions.
• order in which food moves through the gastrointestinal tract. - Correct Answer D

Facilitated diffusion is a type of absorption that requires a special carrier to transport a molecule across the cell membrane and

• / 4