Cardiac muscle is a specialized muscle tissue distinguished by centrally located nuclei, cross-striations (like skeletal muscle), and intercalated discs unique to cardiac tissue. Intercalated discs contain two functional junction types—fascia adherens (adherent junctions that mechanically bind cells end-to-end) and gap junctions (which electrically/chemically couple cells to propagate contraction sequentially through the myocardium)—and this structural organization belongs to the domain of histology/cardiac physiology, explaining how individual cardiac muscle cells function as a coordinated pumping syncytium.
Cardiac muscle is a specialized muscle tissue distinguished by centrally located nuclei, cross-striations (like skeletal muscle), and intercalated discs unique to cardiac tissue. Intercalated discs c…