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Esophagus: Muscularis externa

In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x

Smooth muscle longitudinal section <p>In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x</p>

Smooth muscle longitudinal section

In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x

Smooth muscle cross section <p>In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x</p>

Smooth muscle cross section

In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x

Smooth muscle nuclei <p>In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x</p>

Smooth muscle nuclei

In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x

Skeletal muscle longitudinal section <p>In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x</p>

Skeletal muscle longitudinal section

In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x

Striations <p>In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x</p>

Striations

In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x

Skeletal muscle cross section <p>In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x</p>

Skeletal muscle cross section

In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x

Skeletal muscle nuclei <p>In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x</p>

Skeletal muscle nuclei

In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x

Capillaries <p>In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x</p>

Capillaries

In the middle part of the muscularis externa of the esophagus, smooth muscle fibers and skeletal muscle fibers occur together. In this field, compare the size of the fibers and location of the nuclei of these two muscle types. Striations are also evident in the longitudinally-sectioned skeletal muscle fibers. 1000x

Main Slide Smooth muscle longitudinal section Smooth muscle cross section Smooth muscle nuclei Skeletal muscle longitudinal section Striations Skeletal muscle cross section Skeletal muscle nuclei Capillaries