GNPATL: Microtomy

Lubricant that should never come in contact with the strop

• vegetable oil

• soapy water

• clove oil

• mineral oil

Health hazards attributed to epoxy (more than 1 answer required)

• carcinogenic

• teratogenic

• causes sensitization

• causes burns

TRUE about plane-concave knives

• concave side for paraffin using sliding microtome

• plane side for cellodin using sliding microtome

• length is usually 25 cm

• preferred for paraffin blocks

Angle formed between knife and block

• clearance

• bevel

• wedge

• microtome

Hone that gives the best result

• Belgium yellow

• Arkansas

• Fine carborundum

• carborundum

Microtome that DOES NOT provide a flat plane of cutting

• Cambridge

• Sliding

• Minot

• Freezing

Bevel angle during sectioning

• 5-10 deg

• 27-32 deg

• 35-40 deg

• 10-15 deg

Process of removing burrs and polishing the knife

• honing

• stropping

• trimming

• sharpening

Temperature of water bath for flotation

• 2-5 deg lower

• 2-5 deg higher

• 6-10 deg lower

• 6-10 deg higher

FALSE about honing

• removal of gross nicks

• toe to heel, edge first

• uses smooth stones

• first step in sharpening