The long tube
it is use to hold the test tube
Its function is to keep the eyepiece in place
a reddish brown gas is formed. Water droplets are formed on the sides of the tube.
used to place the test tube . :D hahaha
Tube feet are structures that operate like a suction cup.
to hold the eyepiece
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It helps you see
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Platelet function studies are typically collected in a blue-top tube (sodium citrate) to prevent clotting and maintain the function of platelets for analysis.
The function of the eustachian tube is to equalize the air pressure in the middle ear.