embalming arteries, veins, & nerves

16 terms by kivomunoz 

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VASA VASORUM

LATIN FOR THE VESSELS OF VESSELS

VASA VASORUM

Are found in large arteries and veins (such as the aorta)

VASA VASORUM

Are networks of small blood vessels that supply large blood vessels.

PHYSICAL APPEARANCE OF ARTERIES

Have a lumen.
Are 'thicker than veins.
Will stand open when cut.
Are more elastic than veins.
Are deep and well protected.
Are creamy white to yellowish white in color.
Appear thicker on the edges than in the center.

PHYSICAL APPEARANCE OF VEINS

Collapse when cut.
Are much less elastic than arteries.
Are structurally thinner than arteries.
Are generally deep and more protected below the waist.
Are blue in color; as affected by the color of the blood within.
Are |generally more superficial and less protected above the
waist.

STRUCTURE OF ARTERIES

Are very elastic.
Do not have valves.
Have three thick layers.
Have a hollow "feeling".
Vasa vasorum are usually visible.
The lumen is generally smaller than a vein.

STRUCTURE OF VEINS

Have three thin layers.
Vasa vasorum are indistinct.
Have valves that prevent backward circulation.
Have relatively large lumens as compared to arteries.

THREE LAYERS OF THE ARTERY

1.Outer tunic of the artery- Tunica Adventitia or Tunica Externa 2.Middle tunic of the artery-Tunica media
3.Inner tunic of the arteryTunic Intima

Both arteries and veins

have a similar construction and consist of three major layers.

tunica intima

inner layer lined with endothelium.

tunica media

the middle layer and in arteries contains an extra layer of smooth muscle that allows for increasing or decreasing the size of the artery.

outer layer

called the tunica adventitia in both vessels

APPEARANCE AND STRUCTURE OF NERVES

Have no lumen.
Show no vasa vasorum.
Have very little elasticity.
Havfe a hard "loose" center.
Distinctly show nerve fibers.
Have a solid center when cut.
Are generally listening white in color.

MAKING THE INCISION INTO THE ARTERY OR VEIN

scalpel , ligature , vein scissors , vein expander, aneurism hook, bone separator, grooved director

MAKING THE INCISION INTO THE ARTERY OR VEIN

The embalmer may use a scissors or scalpel
The transverse incision is most commonly used
Care should be taken not to cut through the vessel.
Longitudinal incisions do not work for sclerotic vessels.
Care should be used when raising sclerotic vessels (they may break or
tear easily),
Generally the incision should not pass more than halfway through the vessel
Elevate the Vessels on a bone separator or the handle of the aneurism hook before making the cut.

TYPES OF INCISIONS

Transverse incision(bi-directional), diagonal incision(uni-directional), "T" incision(unidirectional), double "T" incision bi-directional, wedge incision(bi-directional)

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