8/17/2019 Sweat Gland Map

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Sweat Gland Map – Starch Iodine Test

Name ____________________________________________ Period ____ Date ____________________ 

1. Choose a spot (5 cm 5 cm! somewhere on "o#r $od" where "o# wo#ld li%e to map

o#t "o#r sweat &lands.'rea selected ________________________________________________________ 

). 'ppl" iodine to the spot* ma%in& s#re to co+er the entire 5 cm 5 cm area, allow it to

dr" completel".-. Co+er the iodine stained spot with the 5 cm 5 cm paper.. 'ppl" tape to the ed&es o/ the paper so that it is 0rml" stic%in& to the s%in aro#nd the

mappin& area.5. Per/orm the acti+ities instr#cted $" the teacher.. 2hen the iodine sol#tion in the area is ecreted o#t o/ the s%in +ia the sweat &land*

the sweat sho#ld interact with the paper. Paper is made o/ starch. 2hen starch is inthe presence o/ iodine* it t#rns a deep $l#e3$lac% color.

4. o#r paper sho#ld now ha+e a 6map7 o/ the area8s sweat &lands indicated $" $l#e

spots. Tape or recreate the map $elow.

9. Compare "o#r res#lts to those o/ "o#r classmates.:. ;plain "o#r res#lts $elow.