Plotting the Distribution of Sweat Glands 11. With what substance in the bond pa
ID: 142486 • Letter: P
Question
Plotting the Distribution of Sweat Glands 11. With what substance in the bond paper does the iodine painted on the skin react? 12. Based on class data, which skin area-the forearm or palm of hand- -has more sweat glands? Was this an expected result? Explain. Which other body areas would, if tested, prove to have a high density of sweat glands? 13. What organ system controls the activity of the eccrine sweat glands? S yst Dermography: Fingerprinting 14. Why can fingerprints be used to identify individuals? 15. Name the three common fingerprint patterns and hors toos that last about 2 weeks. Hypothesize why henna tattoos do not last as long as 16. Henna tattoos are temporary ta permanent tattoos. of the skin is uneven, resulting in white patches. Recent research suggests 17. Vitiligo is a disorder in which the disorder. Which cells would you expect to be most affected, and why? 2 that vitiligo might be an autoimmune cells wouldExplanation / Answer
11) Starch
Starch is the substance on skin which reacts with the iodine in bond paper giving the color as black or brown. Iodine is also used to do the confirmatory test of presence of starch.
12) Palm
Yes most of people palms has more sweat glands than forearms
Palm has more number of sweat glands. The more number of sweat glands on the palm helps in the control of temperature of body know as thermoregulation.
Face or axilae are the other areas of body where high density of sweat glands. Presence of sweat glands on face helps in the control of face temperature when the temperature raises the nervous system directs the sweat glands to releases sweat and reduces the body temperature.
13) Sympathetic nervous system
Sympathetic nervous system is also called as fight or flight response mainly triggered dfuirn stress conditions and sweat is released during stress conditions
14) As each and every one fingerprints are genetically distinct it can be used to identify individuals. Even the twins though their genetic makeup matches but the DNA finger print is distinct
15) Loops, Arches and whorls
A person may any number of above patterns in the finger prints. The arch print is very rare only 5% population has arch finger print they have ridges starting at one side and ending on other side and spiked in center. Loop patterns are most common with of population 70% of population having it. The whorl type of pattern is seen in 25% of population they form a whorl type pattern
16) As compared to that of permanent tattoo which is are injected into the skin the henna tattoos are applied on the skin as a pastes and the due to tits coloring properties it stays on the skin for longer time which last for about 2-3 weeks.
17) Vitiligo is autoimmune disorder the cells affected might be melanocytes cells which destroy over a limited area on the skin with damage of melanocytes the skin becomes white or some patches are seen on the skin.