Question 1

Explain why food does not normally go up into your nasal cavity or down into your lungs when you swallow-even if you are standing on your head when you swallow.

Accepted Answer

Presence of food in the oropharynx stimulates the deglutition center in the medulla and pons to move the soft palate and uvula upward to close off the nasopharynx,thus keeping food out of the nasal cavity.At the same time,the larynx rises and the epiglottis moves down and back to seal off the larynx,which is further closed by the vocal cords,thus keeping food from entering the lower respiratory tract.

Question 2

Which of the following enzymes acts to produce monoglycerides along with other products?

Accepted Answer

A) Lipase 
B) Amylase 
C) Trypsin 
D) Phosphatase 
E) Ligase 
A) Lipase 
B) Amylase 
C) Trypsin 
D) Phosphatase 
E) Ligase A

Question 3

Which hormone is stimulated by high levels of amino acids and fatty acids in the small intestine?

Accepted Answer

A) Pepsin 
B) Secretin 
C) Gastrin 
D) Cholecystokinin 
E) Amylase 
A) Pepsin 
B) Secretin 
C) Gastrin 
D) Cholecystokinin 
E) Amylase D

Question 4

Which of the following layers of the GI tract contains skeletal muscle?

Accepted Answer

A) Muscularis of the mouth,pharynx and upper esophagus 
B) Muscularis of the stomach,small and large intestines 
C) Serosa 
D) Submucosa 
E) Myotonic plexus 
A) Muscularis of the mouth,pharynx and upper esophagus 
B) Muscularis of the stomach,small and large intestines 
C) Serosa 
D) Submucosa 
E) Myotonic plexus

Question 5

Which of following processes is the function of the smooth muscle layer of the digestive system?

Accepted Answer

A) Ingestion 
B) Secretion 
C) Mixing and propulsion 
D) Absorption 
E) None of these choices 
A) Ingestion 
B) Secretion 
C) Mixing and propulsion 
D) Absorption 
E) None of these choices

Question 6

Identify the protein-hydrolyzing enzymes in the digestive tract,and name their sources.Why are these enzymes released in an inactive form?

Accepted Answer

Pepsin from the stomach,trypsin,chymotry

Question 7

Which of the following accessory organs produces a fluid to soften food?

Accepted Answer

A) Teeth 
B) Salivary glands 
C) Liver 
D) Gallbladder 
E) Pharynx 
A) Teeth 
B) Salivary glands 
C) Liver 
D) Gallbladder 
E) Pharynx

Question 8

Which of the following is NOT a function of the liver itself?

Accepted Answer

A) Conversion of carbohydrates 
B) Protein metabolism 
C) Storage of bile 
D) Phagocytosis 
E) Storage of vitamins 
A) Conversion of carbohydrates 
B) Protein metabolism 
C) Storage of bile 
D) Phagocytosis 
E) Storage of vitamins

Question 9

Which digestive aid,produced by the stomach,begins digestion by denaturing proteins?

Accepted Answer

A) bicarbonate ion 
B) mucus 
C) bile 
D) hydrochloric acid 
E) water 
A) bicarbonate ion 
B) mucus 
C) bile 
D) hydrochloric acid 
E) water

Question 10

An individual eats a diet high in digestible carbohydrates and fats and low in fiber.He begins to experience abdominal pain,constipation,nausea,vomiting and a low-grade fever.He is most likely suffering from

Accepted Answer

A) viral gastroenteritis 
B) diverticulitis 
C) diverticulosis 
D) appendicitis 
E) gastric ulcer 
A) viral gastroenteritis 
B) diverticulitis 
C) diverticulosis 
D) appendicitis 
E) gastric ulcer

Question 11

Which of the following is the forerunner of the gastrointestinal tract?

Accepted Answer

A) primitive gut 
B) foregut 
C) midgut 
D) hindgut 
E) endoderm 
A) primitive gut 
B) foregut 
C) midgut 
D) hindgut 
E) endoderm

Question 12

Which of the following disorders involving the organ labeled E can result from viruses,drugs and chemicals such as alcohol?

Accepted Answer

A) heartburn 
B) mumps 
C) pancreatitis 
D) hepatitis 
E) vomiting 
A) heartburn 
B) mumps 
C) pancreatitis 
D) hepatitis 
E) vomiting

Question 13

Which of the following pancreatic enzymes acts on peptide bonds?

Accepted Answer

A) Chymotrypsin 
B) Amylase 
C) Pepsin 
D) Phosphatase 
E) Nucleosidase 
A) Chymotrypsin 
B) Amylase 
C) Pepsin 
D) Phosphatase 
E) Nucleosidase

Question 14

Which type of hepatitis is spread via fecal contamination of objects such as food,clothing,toys,and eating utensils and is characterized by loss of appetite,malaise,nausea,diarrhea,fever,and chills.

Accepted Answer

A) Hepatitis A 
B) Hepatitis B 
C) Hepatitis C 
D) Hepatitis D 
E) Hepatitis E 
A) Hepatitis A 
B) Hepatitis B 
C) Hepatitis C 
D) Hepatitis D 
E) Hepatitis E

Question 15

Which structure regulates the flow of material into the colon?

Accepted Answer

A) Ileocecal sphincter 
B) Pyloric sphincter 
C) Appendix 
D) Sigmoid colon 
E) Anal canal 
A) Ileocecal sphincter 
B) Pyloric sphincter 
C) Appendix 
D) Sigmoid colon 
E) Anal canal

Question 16

Which of the following pancreatic enzymes acts on glycogen and starches?

Accepted Answer

A) Chymotrypsin 
B) Amylase 
C) Trypsin 
D) Phosphatase 
E) Nucleosidase 
A) Chymotrypsin 
B) Amylase 
C) Trypsin 
D) Phosphatase 
E) Nucleosidase

Question 17

Which of the following structures is found on the liver and is a remnant of the umbilical vein in a fetus?

Accepted Answer

A) Coronary ligament 
B) Falciform ligament 
C) Round ligament 
D) Kupffer ligament 
E) Bile ductules 
A) Coronary ligament 
B) Falciform ligament 
C) Round ligament 
D) Kupffer ligament 
E) Bile ductules

Question 18

Name the layer labeled E

Accepted Answer

A) Submucosa 
B) Serosa 
C) Longitudinal muscle 
D) Mucosa 
E) Circular muscle 
A) Submucosa 
B) Serosa 
C) Longitudinal muscle 
D) Mucosa 
E) Circular muscle

Question 19

Which of the following pancreatic enzymes digests lipids?

Accepted Answer

A) Trypsin 
B) Elastase 
C) Lipase 
D) Pepsin 
E) All of these choices 
A) Trypsin 
B) Elastase 
C) Lipase 
D) Pepsin 
E) All of these choices

Question 20

Which of the following cells secretes pepsinogen?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Exam 24: The Digestive System

Explain why food does not normally go up into your nasal cavity or down into your lungs when you swallow-even if you are standing on your head when you swallow.

Which of the following enzymes acts to produce monoglycerides along with other products?

Which hormone is stimulated by high levels of amino acids and fatty acids in the small intestine?

Which of the following layers of the GI tract contains skeletal muscle?

Which of following processes is the function of the smooth muscle layer of the digestive system?

Identify the protein-hydrolyzing enzymes in the digestive tract,and name their sources.Why are these enzymes released in an inactive form?

Which of the following accessory organs produces a fluid to soften food?

Which of the following is NOT a function of the liver itself?

Which digestive aid,produced by the stomach,begins digestion by denaturing proteins?

An individual eats a diet high in digestible carbohydrates and fats and low in fiber.He begins to experience abdominal pain,constipation,nausea,vomiting and a low-grade fever.He is most likely suffering from

Which of the following is the forerunner of the gastrointestinal tract?

Which of the following disorders involving the organ labeled E can result from viruses,drugs and chemicals such as alcohol?

Which of the following pancreatic enzymes acts on peptide bonds?

Which type of hepatitis is spread via fecal contamination of objects such as food,clothing,toys,and eating utensils and is characterized by loss of appetite,malaise,nausea,diarrhea,fever,and chills.

Which structure regulates the flow of material into the colon?

Which of the following pancreatic enzymes acts on glycogen and starches?

Which of the following structures is found on the liver and is a remnant of the umbilical vein in a fetus?

Name the layer labeled E

Which of the following pancreatic enzymes digests lipids?

Which of the following cells secretes pepsinogen?

An Introduction to the Human Body

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: The Appendicular Skeleton

Joints

Muscular Tissue

The Muscular System

Nervous Tissue

The Spinal Cord and Spinal Nerves

The Brain and Cranial Nerves

The Autonomic Nervous System

Sensory, Motor, and Integrative Systems

The Special Senses

The Endocrine System

The Cardiovascular System: the Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System and Immunity

The Respiratory System

Metabolism and Nutrition

The Urinary System

Fluid, Electrolyte, and Acidbase Homeostasis

The Reproductive Systems

Development and Inheritance

Filters