![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Smooth muscle
Smooth muscle located in the wall of the digestive tract is arranged in distinct circular and longitudinal layers. Because smooth muscle fibers are splindle-shaped with a single, centrally located nucleus, cross sections of this tissue will display profiles of varying diameters, which may or may not contain the nucleus. 1000x
![Muscle fibers, longitudinal section <p>Smooth muscle located in the wall of the digestive tract is arranged in distinct circular and longitudinal layers. Because smooth muscle fibers are splindle-shaped with a single, centrally located nucleus, cross sections of this tissue will display profiles of varying diameters, which may or may not contain the nucleus. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/T.M.Sm-3-1-ping.png)
Muscle fibers, longitudinal section
Smooth muscle located in the wall of the digestive tract is arranged in distinct circular and longitudinal layers. Because smooth muscle fibers are splindle-shaped with a single, centrally located nucleus, cross sections of this tissue will display profiles of varying diameters, which may or may not contain the nucleus. 1000x
![Muscle fibers, cross section <p>Smooth muscle located in the wall of the digestive tract is arranged in distinct circular and longitudinal layers. Because smooth muscle fibers are splindle-shaped with a single, centrally located nucleus, cross sections of this tissue will display profiles of varying diameters, which may or may not contain the nucleus. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/T.M.Sm-3-2-ping.png)
Muscle fibers, cross section
Smooth muscle located in the wall of the digestive tract is arranged in distinct circular and longitudinal layers. Because smooth muscle fibers are splindle-shaped with a single, centrally located nucleus, cross sections of this tissue will display profiles of varying diameters, which may or may not contain the nucleus. 1000x
![Nuclei <p>Smooth muscle located in the wall of the digestive tract is arranged in distinct circular and longitudinal layers. Because smooth muscle fibers are splindle-shaped with a single, centrally located nucleus, cross sections of this tissue will display profiles of varying diameters, which may or may not contain the nucleus. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/T.M.Sm-3-3-ping.png)
Nuclei
Smooth muscle located in the wall of the digestive tract is arranged in distinct circular and longitudinal layers. Because smooth muscle fibers are splindle-shaped with a single, centrally located nucleus, cross sections of this tissue will display profiles of varying diameters, which may or may not contain the nucleus. 1000x
![Organelles > <p>In smooth muscle fibers, the majority of non-contractile organelles, e.g., mitochondria and RER, are located at the poles of the nuclei.</p>](https://digitalhistology.org/wp-content/uploads/2017/05/T.M.Sm-3-4-ping.png)
Organelles >
In smooth muscle fibers, the majority of non-contractile organelles, e.g., mitochondria and RER, are located at the poles of the nuclei.
![Autonomic nerves > <p>Peripheral, autonomic nerves belonging to Auerbach’s plexus are located between the perpendicularly arranged smooth muscle layers. The nerves in the plexus supply the muscle, regulating contraction.</p>](https://digitalhistology.org/wp-content/uploads/2017/05/T.M.Sm-3-5-ping.png)
Autonomic nerves >
Peripheral, autonomic nerves belonging to Auerbach’s plexus are located between the perpendicularly arranged smooth muscle layers. The nerves in the plexus supply the muscle, regulating contraction.