Tuesday, August 23, 2011

CSI: Hair and Fibre evidence and others (22/8/11)

Sketch of different types of hair/fabric particles
Done by Chloe, Alyssa, Natalie Koh, Jubily, Qian Hui and Sher Ting
Sketch of the hair particles of Sher Ting, Jubily, Chloe and Qian Hui

Partner: Jubily Toh-Chin
Today, during the first part of Bio, we analyzed hair and fibre. Jubily pulled out a strand of finger hair, I pulled out one of my baby hairs from the front of my scalp and Chloe used her eyebrow hair. Chloe's hair particle had a bulbous root as her hair was at a telogen phase (she did not pull it out but it dropped out on its own) while mine and Jubily's were still at its catagen phase. Mine had a lot of root sheath cells (follicular tissue) attached (as you can see from the sketch, the thing sticking out). Mine had presence of continuous, cylindrical medullae and extremely dark brown pigment.

We also analyzed Chloe's purple sweater fabric. Under the microscope, it had none of the complex structures, such as medullae present in humans. It was just purple and all the strings clumped together in a criss-cross pattern so it can be inferred that it was cross-stitched.

1 comment:

  1. Yo Shert! Haha, nice analysis. I cited you in my journal. :) Also, it was not eyebrow hair! My eyelash dropped off. :P Eyebrow hair doesn't just drop off like that...Haha. Good job.

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