dsm ch 14

Which duct empties bile into the hepatopancreatic ampulla, a bulblike structure that leads to the duodenum?

Bile duct

Shaped like a worm, the appendix projects inferiorly from which region of the large intestine?

Cecum

Which of the following is a bonelike material that forms the bulk of the tooth?

Dentin

Which of the following are roles of the liver?

Detoxification of drugs and alcohol Glycogen storage Production of bile

Select the correct order for the three segments of the small intestine as chyme flows through them from the stomach to the large intestine.

Duodenum, jejunum, ileum

Select the major source of fuel for making ATP in most body cells.

Glucose molecules

Which process in the liver refers to the formation of glycogen?

Glycogenesis

Which of the following characterize the large intestine?

It has numerous goblet cells in its mucosa. It includes the cecum, the colon, and the rectum. It has longitudinal bands of muscle called teniae coli, which pucker to form small sacs called haustra.

Select the innermost layer of the alimentary canal that lines the lumen.

Mucosa

Which layer of the stomach wall is responsible for churning the food and moving it along the alimentary canal?

Muscularis externa

What organ produces enzymes capable of digesting all categories of digestible foods?

Pancreas

Which of the following is the major means of propelling the bolus and chyme through the digestive tract?

Peristalsis

Which of the following are organs of the alimentary canal?

Pharynx Mouth Small intestine

Assign each enzyme to its site of action and digestive function.

Protein digestion in the small intestine: Trypsin Protein digestion in the stomach: Pepsin Carbohydrate digestion in the mouth: Salivary amylase Fat digestion in the small intestine: Pancreatic lipase Complete digestion of carbohydrates and proteins in the small intestine: Brush border enzymes

Along which segment of the alimentary canal does most of the absorption of digested foods occur?

Small intestine

Which regions of the alimentary canal break down food both physically and chemically?

Stomach Small intestine Mouth

Assign each structural feature of the digestive system to its location.

Stomach: Rugae Small intestine: Peyer's patches Liver: Flaciform ligament Large intestine: Hasutra Mouth: Lingual frenulum

Stomach cells release the hormone gastrin, which acts to __________.

increase the secretion of gastric juice

Select all of the major nutrients.

lipids, proteins, carbohydrates

Which organ produces bile?

liver

Chief cells of the gastric glands secrete __________.

pepsinogen

The __________ regulates the passage of chyme from the stomach into the small intestine.

pyloric sphincter

The fingerlike projections of the small intestine mucosa, which are so important in nutrient absorption, are the __________.

villi

Which of the following factors influence the basal metabolic rate (BMR)?

Thyroxine levels Age Gender

Most plant proteins __________.

are nutritionally incomplete