The ventricles always depolarize at the same rate as the SA node depolarizes

Indicate whether the statement is true or false


F

Anatomy & Physiology

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Wasting away or deterioration of muscle is called ________.

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What is happening in the heart when a P wave is recorded on an ECG?

A. The ventricles are depolarizing. B. The atria are depolarizing. C. The ventricles are repolarizing. D. The ventricles are contracting. E. Ventricular systole is occurring.

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How would you alter your breathing in order to decrease arterial PCO2?

A. breathe more slowly B. decrease tidal volume C. hypoventilate D. increase alveolar ventilation E. rapid, shallow panting

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Hemoglobin accounts for ____ of the weight of RBCs.

A) three-fourths B) one-half C) one-third D) one-quarter

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