Quiz Ch38

Question 1

1. Which of the following organs is NOT part of the alimentary or GI tract?
A.   Mouth  
B.   Esophagus  
C.   Stomach  
D.   Liver

Answer 1

D. Liver

Question 2

2. Which of the following is NOT one of the three salivary glands?
A.   Thyroid
B.   Submandibular  
C.   Sublingual  
D.   Parotid

Answer 2

A. Thyroid

Question 3

3. Which of the following is TRUE regarding salivation?
   A. Salivation is controlled by the parasympathetic nervous system. Incorrect
   B. Cholinergic fibers stimulate the salivary glands.
   C. Atropine increases salivary secretion.
   D. ß-Adrenergic stimulation decreases salivary secretion.

Answer 3

B. Cholinergic fibers stimulate the salivary glands

Question 4

4. Which of the following is TRUE regarding the esophagus?
   A. The upper third is mixed striated and smooth muscle.
   B. The middle third is innervated by motor fibers.
   C. The lower third is innervated by striated muscle.
   D. The lower third is innervated by preganglionic fibers from the vagus nerve.

Answer 4

D. The lower third is innervated by preganglionic fibers from the vagus nerve.

Question 5

5. Which blood vessel provides blood to the stomach?
A.   Celiac artery  
B.   Gastric artery 
C.   Splenic artery  
D.   Mesenteric artery

Answer 5

A. Celiac artery

Question 6

6. Which of the following hormones is responsible for inhibition of the stomach contraction?
A.   Gastrin  
B.   Motilin  
C.   Secretin
D.   Cholecystokinin

Answer 6

C. Secretin

Question 7

7. Which cells of the stomach secrete hydrochloric acid and intrinsic factor?
A.   Parietal cells 
B.   Chief cells  
C.   G cells 
D.   Enterochromaffin-like cells

Answer 7

A. Parietal cells

Question 8

8. Which of the following is NOT one of the functions of stomach acid?
   A. Dissolve food fibers
   B. Act as a bactericide
   C. Convert intrinsic factor into its active form
   D. Convert pepsinogen into pepsin

Answer 8

C. Convert intrinsic factor into its active form

Question 9

9. Which of the following is NOT part of the cephalic phase of gastric juice secretion?
A.   Smelling food  
B.   Seeing food  
C.   Tasting food  
D.   Eating food

Answer 9

D. Eating food

Question 10

10. Which enzyme is responsible for breaking the end amino acids away from the ingested protein?
A.   Trypsin  
B.   Chymotrypsin  
C.   Lipase  
D.   Carboxypeptidases

Answer 10

D. Carboxypeptidases

Question 11

11. Which enzyme is responsible for cleaving fatty acids from phospholipids?
A.   Cholesterol esterase  
B.   Phospholipase 
C.   Lipase  
D.   Chylomicron

Answer 11

B. Phospholipase

Question 12

12. When iron is being absorbed into the small bowel, to what protein is it bound in the epithelial cells?
A.   Transferrin  
B.   Calcium phosphate  
C.   Transcobalamin  
D.   Ferritin

Answer 12

D. Ferritin

Question 13

13. Which of the following is NOT one of the four phases of digestion and absorption of fat?
A.   Emulsification and lipolysis  
B.   Micelle formation 
C.   Hydrolysis 
D.   Fat absorption

Answer 13

C. Hydrolysis

Question 14

14. Which cells of the liver store lipids?
A. Hepatocytes  
B.   Sinusoids  
C.   Lipocytes  
D.   Kupffer cells

Answer 14

C. Lipocytes

Question 15

15. Which of the following is the appropriate description for unconjugated bilirubin?
    A. It is bilirubin that binds to albumin.
    B. It is found within the hepatocytes.
    C. It is found at the terminal end of the ileum and the colon.
    D. It is water soluble.

Answer 15

A. It is bilirubin that binds to albumin.