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Large vein

The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x

Location of the image <p>The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x</p>

Location of the image

The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x

Tunica intima <p>The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x</p>

Tunica intima

The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x

 - Endothelium <p>The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x</p>

- Endothelium

The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x

 - Longitudinal smooth muscle  <p>The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x</p>

- Longitudinal smooth muscle

The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x

 - Internal elastic lamina <p>The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x</p>

- Internal elastic lamina

The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x

Tunica media <p>The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x</p>

Tunica media

The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x

 - Circular smooth muscle <p>The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x</p>

- Circular smooth muscle

The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x

Tunica adventitia <p>The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x</p>

Tunica adventitia

The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x

 - Longitudinal smooth muscle  <p>The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x</p>

- Longitudinal smooth muscle

The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x

Connective tissue <p>The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x</p>

Connective tissue

The walls of large veins show great heterogeneity.  Here, tunica intima is composed of endothelium and a CT layer that contains longitudinally orientated smooth muscle.  A discontinuous internal elastic lamina is present.  Tunica media is composed of circularly arranged smooth muscle (cut in cross section in this longitudinal section), interspersed with CT.  400x