Exam All Answers and
Illustrations Given
Which of the following is not found in a duct cell?
A Na/K/ATPase
B H/K/ATPase
C Na/H exchanger
D HCO3/Cl exchanger - ANSWER ✔✔B
The layer of the digestive tract that features the most regional
specializations
, A Mucosa
B Submucosa
C Muscularis externa
D Serosa - ANSWER ✔✔A
Smooth muscle is inhibited/relaxed by:
A Phosphodiesterase activity
B Phosphatase activity
C Both
D Neither - ANSWER ✔✔B
Brush border enzymes catalyze a chemical reaction that produces
A Lactose
B Galactose
C Sucrose
D All - ANSWER ✔✔B
Changes in H+ concentration would most likely interfere with the
absorption of:
A Amino acids