The sinoatrial node, the atrioventricular node, and the atrioventricular bundle are specialized ________ tissues of the heart
A) endocardial
B) myocardial
C) neuromuscular
D) pericardial
C
Explanation: A) Endocardial tissue lines the chambers of the heart.
B) Myocardial tissues are the walls of the chambers.
C) Correct.
D) Pericardial tissues form the sac around the heart.
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