The normal pacemaker of the heart is the

A. sinoatrial node.
B. A-V node.
C. S-V node.
D. atrioventricular node.


Answer: A

Health & Biomechanics

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What is the term used to describe the mechanism for the regulation of [K+]o by astrocytes? Choose the correct option

A) Depolarization C) Blood-brain barrier B) Potassium spatial buffering D) Goldman equation

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HDL3 seems to

a. penetrate the lining of arteries and speed up the process of atherosclerosis. b. protect against cholesterol oxidation that results in atherosclerosis. c. carry cholesterol from the blood to the artery walls, resulting in atherosclerosis. d. be significantly lower among African American men than Caucasians.

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A medical term that means pertaining to the head is ____________________

Fill in the blank(s) with correct word

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Which is the correct breakdown and translation of the medical term encephalalgia?

A. en (upon) + cephal (head) + algia (condition) = condition upon the head B. en (upon) + cephal (brain) + algia (recording) = recording upon the brain C. encephal (head) + algia (pertaining to) = pertaining to the head D. encephal (brain) + algia (pain) = brain pain E. encephal (nerve) + algia (written record) = written record of the nerves

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