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