The function of the intrinsic conduction system is to ________

A) carry branches of the autonomic nervous system to heart muscle
B) contract slightly before the cardiac tissue to which it is connected
C) maintain the structural integrity of the atria and ventricles
D) ensure that the heart beats in a sequential and coordinated manner


Answer: D

Anatomy & Physiology

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Simple reflexes in a worm are integrated within a segment rather than in the brain, because

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The major body part(s) derived from ectoderm is/are

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Anatomy & Physiology