_____ cells are working cells of the heart that contain contractile filaments and form the muscular layer of the atrial walls and the thicker muscular layer of the ventricular walls.
A) Pacemaker
B) Myocardial
C) Specialized
D) Electrical

Question

Quizplus · Accepted Answer

Myocardial cells (working or mechanical cells) contain contractile filaments. When these cells are electrically stimulated, the contractile filaments slide together, and the myocardial cell contracts.

_____ Cells Are Working Cells of the Heart That Contain