The minimum amount of energy that reactants must have to start a chemical reaction is called ________energy.
A. mechanical
B. potential
C. electromagnetic
D. activation
E. kinetic
Answer: D
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Postganglionic axons are
A. myelinated. B. unmyelinated. C. sometimes myelinated and sometimes unmyelinated.
The gastric phase of gastric secretion
A. is triggered by taste, sight, thought, or smell of food. B. decreases the release of gastrin in the stomach. C. is mediated by impulses on sympathetic nerves. D. leads to the greatest volume of gastric secretion. E. leads to the least volume of gastric secretion.
Inhibiting the actions of helper T lymphocytes may impair humoral immunity.
Answer the following statement true (T) or false (F)
Which of the following occurs when the parasympathetic system is stimulated?
A. Increased motility of the digestive tract B. Increased metabolism C. Decreased motility of the digestive tract D. Increased blood pressure E. Increased heart rate