Which of the following statements concerning HCl in the stomach is correct?
a. It inactivates salivary amylase and the pancreatic enzymes.
b. It activates pepsinogen.
c. It establishes a low pH in the stomach.
d. It is secreted by oxyntic cells.
e. All of the above.
E
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Atrial natriuretic peptide (ANP) inhibits the release of aldosterone, ADH, and renin
Indicate whether this statement is true or false.
A compound action potential is recorded using electrodes on a nerve. How does a nerve differ from an axon? Amplitude and duration of a compound action potential vary according to the stimulus intensity applied to the nerve. Given that there is no such variation in the action potential of a single axon, how can you explain this?
What will be an ideal response?
Plasma cells are responsible for ____________________.
cellular immunity humoral immunity antibody production both A and C are correct none of the choices are correct
Changes in the rate and depth of breathing are regulated primarily by the:
A) pH of venous blood. B) pH of the CSF. C) saturation of oxygen and hemoglobin. D) amount of oxygen in the blood plasma.