Large vein (vena cava)
These images show a large vein in longitudinal section. Therefore, the orientation of the smooth muscle fibers is reversed from that shown in the previous cross sections. In this orientation, longitudinally-oriented smooth muscle fibers in tunicae intima and adventitia are seen in longitudinal section, and the circularly arranged smooth muscle in the tunica media is seen in cross section. This section was stained for elastic fibers, thus an internal elastic lamina, which is present in larger veins, is prominent. 100x, 250x
Tunica intima
These images show a large vein in longitudinal section. Therefore, the orientation of the smooth muscle fibers is reversed from that shown in the previous cross sections. In this orientation, longitudinally-oriented smooth muscle fibers in tunicae intima and adventitia are seen in longitudinal section, and the circularly arranged smooth muscle in the tunica media is seen in cross section. This section was stained for elastic fibers, thus an internal elastic lamina, which is present in larger veins, is prominent. 100x, 250x
- Endothelium
These images show a large vein in longitudinal section. Therefore, the orientation of the smooth muscle fibers is reversed from that shown in the previous cross sections. In this orientation, longitudinally-oriented smooth muscle fibers in tunicae intima and adventitia are seen in longitudinal section, and the circularly arranged smooth muscle in the tunica media is seen in cross section. This section was stained for elastic fibers, thus an internal elastic lamina, which is present in larger veins, is prominent. 100x, 250x
- Smooth muscle fibers
These images show a large vein in longitudinal section. Therefore, the orientation of the smooth muscle fibers is reversed from that shown in the previous cross sections. In this orientation, longitudinally-oriented smooth muscle fibers in tunicae intima and adventitia are seen in longitudinal section, and the circularly arranged smooth muscle in the tunica media is seen in cross section. This section was stained for elastic fibers, thus an internal elastic lamina, which is present in larger veins, is prominent. 100x, 250x
- Internal elastic lamina
These images show a large vein in longitudinal section. Therefore, the orientation of the smooth muscle fibers is reversed from that shown in the previous cross sections. In this orientation, longitudinally-oriented smooth muscle fibers in tunicae intima and adventitia are seen in longitudinal section, and the circularly arranged smooth muscle in the tunica media is seen in cross section. This section was stained for elastic fibers, thus an internal elastic lamina, which is present in larger veins, is prominent. 100x, 250x
Tunica media
These images show a large vein in longitudinal section. Therefore, the orientation of the smooth muscle fibers is reversed from that shown in the previous cross sections. In this orientation, longitudinally-oriented smooth muscle fibers in tunicae intima and adventitia are seen in longitudinal section, and the circularly arranged smooth muscle in the tunica media is seen in cross section. This section was stained for elastic fibers, thus an internal elastic lamina, which is present in larger veins, is prominent. 100x, 250x
- Smooth muscle fibers
These images show a large vein in longitudinal section. Therefore, the orientation of the smooth muscle fibers is reversed from that shown in the previous cross sections. In this orientation, longitudinally-oriented smooth muscle fibers in tunicae intima and adventitia are seen in longitudinal section, and the circularly arranged smooth muscle in the tunica media is seen in cross section. This section was stained for elastic fibers, thus an internal elastic lamina, which is present in larger veins, is prominent. 100x, 250x
Tunica adventitia
These images show a large vein in longitudinal section. Therefore, the orientation of the smooth muscle fibers is reversed from that shown in the previous cross sections. In this orientation, longitudinally-oriented smooth muscle fibers in tunicae intima and adventitia are seen in longitudinal section, and the circularly arranged smooth muscle in the tunica media is seen in cross section. This section was stained for elastic fibers, thus an internal elastic lamina, which is present in larger veins, is prominent. 100x, 250x
- Smooth muscle fibers
These images show a large vein in longitudinal section. Therefore, the orientation of the smooth muscle fibers is reversed from that shown in the previous cross sections. In this orientation, longitudinally-oriented smooth muscle fibers in tunicae intima and adventitia are seen in longitudinal section, and the circularly arranged smooth muscle in the tunica media is seen in cross section. This section was stained for elastic fibers, thus an internal elastic lamina, which is present in larger veins, is prominent. 100x, 250x
- Connective tissue
These images show a large vein in longitudinal section. Therefore, the orientation of the smooth muscle fibers is reversed from that shown in the previous cross sections. In this orientation, longitudinally-oriented smooth muscle fibers in tunicae intima and adventitia are seen in longitudinal section, and the circularly arranged smooth muscle in the tunica media is seen in cross section. This section was stained for elastic fibers, thus an internal elastic lamina, which is present in larger veins, is prominent. 100x, 250x
- Elastic fibers
These images show a large vein in longitudinal section. Therefore, the orientation of the smooth muscle fibers is reversed from that shown in the previous cross sections. In this orientation, longitudinally-oriented smooth muscle fibers in tunicae intima and adventitia are seen in longitudinal section, and the circularly arranged smooth muscle in the tunica media is seen in cross section. This section was stained for elastic fibers, thus an internal elastic lamina, which is present in larger veins, is prominent. 100x, 250x
PREVIOUS