![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Cardiac muscle
Cardiac muscle fibers are unique in that they branch and interlace. This hematoxylin and eosin stained, longitudinal section shows cardiac muscle fibers forming a feltwork in the myocardium of the heart. Cardiac muscle fibers are striated, though the cross striations are not as prominent as in skeletal muscle fibers. 400x
![Muscle fibers <p>Cardiac muscle fibers are unique in that they branch and interlace. This hematoxylin and eosin stained, longitudinal section shows cardiac muscle fibers forming a feltwork in the myocardium of the heart. Cardiac muscle fibers are striated, though the cross striations are not as prominent as in skeletal muscle fibers. 400x</p>](https://digitalhistology.org/wp-content/uploads/2019/07/T.M.C-3A-1a-ping.png)
Muscle fibers
Cardiac muscle fibers are unique in that they branch and interlace. This hematoxylin and eosin stained, longitudinal section shows cardiac muscle fibers forming a feltwork in the myocardium of the heart. Cardiac muscle fibers are striated, though the cross striations are not as prominent as in skeletal muscle fibers. 400x
![Fiber branching <p>Cardiac muscle fibers are unique in that they branch and interlace. This hematoxylin and eosin stained, longitudinal section shows cardiac muscle fibers forming a feltwork in the myocardium of the heart. Cardiac muscle fibers are striated, though the cross striations are not as prominent as in skeletal muscle fibers. 400x</p>](https://digitalhistology.org/wp-content/uploads/2019/07/T.M.C-3A-2a-ping.png)
Fiber branching
Cardiac muscle fibers are unique in that they branch and interlace. This hematoxylin and eosin stained, longitudinal section shows cardiac muscle fibers forming a feltwork in the myocardium of the heart. Cardiac muscle fibers are striated, though the cross striations are not as prominent as in skeletal muscle fibers. 400x
![Nuclei <p>Cardiac muscle fibers are unique in that they branch and interlace. This hematoxylin and eosin stained, longitudinal section shows cardiac muscle fibers forming a feltwork in the myocardium of the heart. Cardiac muscle fibers are striated, though the cross striations are not as prominent as in skeletal muscle fibers. 400x</p>](https://digitalhistology.org/wp-content/uploads/2019/07/T.M.C-3A-3a-ping.png)
Nuclei
Cardiac muscle fibers are unique in that they branch and interlace. This hematoxylin and eosin stained, longitudinal section shows cardiac muscle fibers forming a feltwork in the myocardium of the heart. Cardiac muscle fibers are striated, though the cross striations are not as prominent as in skeletal muscle fibers. 400x
![Striations <p>Cardiac muscle fibers are unique in that they branch and interlace. This hematoxylin and eosin stained, longitudinal section shows cardiac muscle fibers forming a feltwork in the myocardium of the heart. Cardiac muscle fibers are striated, though the cross striations are not as prominent as in skeletal muscle fibers. 400x</p>](https://digitalhistology.org/wp-content/uploads/2019/07/T.M.C-3A-4a-ping.png)
Striations
Cardiac muscle fibers are unique in that they branch and interlace. This hematoxylin and eosin stained, longitudinal section shows cardiac muscle fibers forming a feltwork in the myocardium of the heart. Cardiac muscle fibers are striated, though the cross striations are not as prominent as in skeletal muscle fibers. 400x
![Intercalated discs <p>Cardiac muscle fibers are unique in that they branch and interlace. This hematoxylin and eosin stained, longitudinal section shows cardiac muscle fibers forming a feltwork in the myocardium of the heart. Cardiac muscle fibers are striated, though the cross striations are not as prominent as in skeletal muscle fibers. 400x</p>](https://digitalhistology.org/wp-content/uploads/2019/07/T.M.C-3A-5a-ping.png)
Intercalated discs
Cardiac muscle fibers are unique in that they branch and interlace. This hematoxylin and eosin stained, longitudinal section shows cardiac muscle fibers forming a feltwork in the myocardium of the heart. Cardiac muscle fibers are striated, though the cross striations are not as prominent as in skeletal muscle fibers. 400x
![Lipofuscin pigment > <p>Lipofuscin is a pigment residue of lysosomal digestion and appears as fine, membrane-bound yellowish-brown granules in the cytoplasm. Lipofuscin is composed of oxidized lipids and proteins that accumulate in cells during normal aging. Lipofuscin is particularly abundant in long-lived cells such as these muscle fibers and neurons.</p>](https://digitalhistology.org/wp-content/uploads/2019/07/T.M.C-3A-6a-ping.png)
Lipofuscin pigment >
Lipofuscin is a pigment residue of lysosomal digestion and appears as fine, membrane-bound yellowish-brown granules in the cytoplasm. Lipofuscin is composed of oxidized lipids and proteins that accumulate in cells during normal aging. Lipofuscin is particularly abundant in long-lived cells such as these muscle fibers and neurons.
![Image source > <p>This image is owned by Dr. Jose Luis Calvo and is used under a royalty-free agreement.</p>](https://digitalhistology.org/wp-content/uploads/2019/07/Calvo.png)
Image source >
This image is owned by Dr. Jose Luis Calvo and is used under a royalty-free agreement.