In an ECG, the T wave represents
A. depolarization of the atria.
B. depolarization of the ventricles.
C. repolarization of the atria.
D. repolarization of the ventricles.
Answer: D
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If the sodium-potassium pumps in the plasma membrane fail to function, all of the following occur except
A) the intracellular concentration of potassium ions will increase. B) the neuron will slowly depolarize. C) the membrane will slowly lose its capacity to generate action potentials. D) the inside of the membrane will have a resting membrane potential that is more positive than normal. E) the intracellular concentration of sodium ions will increase.
Which of the following is not a function of the inflammatory response?
A) prevents the spread of the injurious agent to nearby tissue B) disposes of cellular debris and pathogens C) replaces injured tissues with connective tissue D) sets the stage for repair processes
Cranial nerves that carry parasympathetic components are
A) III, VII, IX, X. B) II, IV, VI, VII, X. C) I, II, III, IV, V, VI. D) VII, VIII, IX, XI, XII. E) None of the answers are correct.
Which blood vessels handle the highest blood pressure?
A) pulmonary arteries B) systemic arteries C) systemic veins D) pulmonary veins