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Cardiac muscle

Cardiac muscle fibers comprise the myocardium of the heart and extends into the attachments of the large veins. Cardiac muscle tissue, seen here in cross section, shows numerous fibers with centrally located nuclei and surrounding myofibrils. The presence of these myofibrils and the size of the muscle fiber distinguishes this muscle type from smooth muscle fibers which are smaller and lack myofibrils. 200x

Muscle fibers <p>Cardiac muscle fibers comprise the myocardium of the heart and extends into the attachments of the large veins. Cardiac muscle tissue, seen here in cross section, shows numerous fibers with centrally located nuclei and surrounding myofibrils. The presence of these myofibrils and the size of the muscle fiber distinguishes this muscle type from smooth muscle fibers which are smaller and lack myofibrils. 200x</p>

Muscle fibers

Cardiac muscle fibers comprise the myocardium of the heart and extends into the attachments of the large veins. Cardiac muscle tissue, seen here in cross section, shows numerous fibers with centrally located nuclei and surrounding myofibrils. The presence of these myofibrils and the size of the muscle fiber distinguishes this muscle type from smooth muscle fibers which are smaller and lack myofibrils. 200x

Nuclei <p>Cardiac muscle fibers comprise the myocardium of the heart and extends into the attachments of the large veins. Cardiac muscle tissue, seen here in cross section, shows numerous fibers with centrally located nuclei and surrounding myofibrils. The presence of these myofibrils and the size of the muscle fiber distinguishes this muscle type from smooth muscle fibers which are smaller and lack myofibrils. 200x</p>

Nuclei

Cardiac muscle fibers comprise the myocardium of the heart and extends into the attachments of the large veins. Cardiac muscle tissue, seen here in cross section, shows numerous fibers with centrally located nuclei and surrounding myofibrils. The presence of these myofibrils and the size of the muscle fiber distinguishes this muscle type from smooth muscle fibers which are smaller and lack myofibrils. 200x

Connective tissue <p>Cardiac muscle fibers comprise the myocardium of the heart and extends into the attachments of the large veins. Cardiac muscle tissue, seen here in cross section, shows numerous fibers with centrally located nuclei and surrounding myofibrils. The presence of these myofibrils and the size of the muscle fiber distinguishes this muscle type from smooth muscle fibers which are smaller and lack myofibrils. 200x</p>

Connective tissue

Cardiac muscle fibers comprise the myocardium of the heart and extends into the attachments of the large veins. Cardiac muscle tissue, seen here in cross section, shows numerous fibers with centrally located nuclei and surrounding myofibrils. The presence of these myofibrils and the size of the muscle fiber distinguishes this muscle type from smooth muscle fibers which are smaller and lack myofibrils. 200x

Blood vessels <p>Cardiac muscle fibers comprise the myocardium of the heart and extends into the attachments of the large veins. Cardiac muscle tissue, seen here in cross section, shows numerous fibers with centrally located nuclei and surrounding myofibrils. The presence of these myofibrils and the size of the muscle fiber distinguishes this muscle type from smooth muscle fibers which are smaller and lack myofibrils. 200x</p>

Blood vessels

Cardiac muscle fibers comprise the myocardium of the heart and extends into the attachments of the large veins. Cardiac muscle tissue, seen here in cross section, shows numerous fibers with centrally located nuclei and surrounding myofibrils. The presence of these myofibrils and the size of the muscle fiber distinguishes this muscle type from smooth muscle fibers which are smaller and lack myofibrils. 200x

Main Slide Muscle fibers Nuclei Connective tissue Blood vessels