Tuesday, August 25, 2009

Some Haikus AND the Dance of Many Cloths

This is a bonus double post since I haven't posted in so long.

Anatomy lab.
Question: S'pose we need this thing?
Likely not. Whack. Oops.

Invisible lines,
Black on black and white on white,
Radiology.

The Dance of Many Cloths is not as romantic as one might guess from the name I've given it. It involves many props:
  1. A balloon with some tubing, two strands of red yarn, a strand of yellow yarn, a strand of green yarn, and a strand of blue yarn attached. This will represent a testicle and all the vessels and nerves trailing along with it. There is the vas defrens which is the tubing. It has its own dedicated artery, which is represented by one strand of red yarn. The second strand of red yarn is the artery for the testicle. The yellow is nerve, green is lymphatics, blue is vein. So this should be a sign. If you don't want to read about testicles, you should stop reading now.
  2. A sheer, gauzy white cloth. This is the transversalis fascia.
  3. Three striped clothes. These will represent the tranversus abdominis muscle and the external and internal oblique muscles. The stripes indicate the directionality of the muscle fibers. Transversus abdominis and internal oblique fibers run in the same direction, and both are perpendicular to the external obliqe.
  4. A fleshy colored cloth somehow formed into a sac. This is the scrotum.
  5. 6 people. One person per prop.
And now to setup for the dance. One person holds the testicle aloft. He or she will stand in the back because the testicle develops prety much right up against the back in the area where the heart is (actually, the ovary does this too). One person holds up the transversalis fascia. This is the layer of connective tissue between the abdominal wall and all the guts inside. The muscles will be held up in this order from back to front: transversus abdominis, internal oblique, external obliqe. Transversus abdominis needs to be held slightly higher than the others. The fibers of external oblique point down and towards the middle. Lastly, someone will hold the scrotum.

After all the setup, the dance is actually quite brief. The testicle, plus its associated dancer, moves forwards. As it does, it acquires a covering of everything except for the transversus abdominis, which it passes under. After acquiring all these layers, it then is dropped into the scrotum. And so here we have it, the Dance of Many Cloths, and interpretation of the descent of a testicle.

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