Histotechnology - Fixation question n answers rated A+ 2023/2024

Histotechnology - FixationThe primary purpose of fixation is to: a. stop enzymatic action b. remove the water from the tissue c. provide support for the tissue d. autolyze the tissue - correct answers a Which of the following fixatives contains picric acid, formalin, and acetic acid? a. Zenker b. Helly c. Bouin d. Zamboni - correct answers c The volume of fixative should exceed the volume of the tissue by: a. 1 time to 2 times b. 5 times to 10 times c. 15 times to 20 times d. 25 times to 50 times - correct answers c Tissue must be washed in running water after fixation in: a. Zenker solution b. absolute alcohol c. glyoxal d. formalin - correct answers a Which of the .following fixatives contains formalin, potassium dichromate, and mercuric chloride? a. Zenker b. Helly c. Carnoy d. Orth - correct answers b Precipitate left in tissues that have been fixed in solutions containing mercuric chloride may be removed by immersion in: a. running water b. sodium thiosulfate c. weak ammonia water d. iodine - correct answers d Commercial stock formaldehyde solutions contain: a. 4% formaldehyde b. 10% formaldehyde c. 37% to 40% formaldehyde d. 98% to 100% formaldehyde - correct answers c Formalin pigment would almost certainly be formed when the pH of the formalin is: a. 5.0 b. 6.0 c. 7.0 d. 8.0 - correct answers a Formalin pigment may be removed from tissue by a. running water b. alcoholic iodine c. alcoholic picric acid d. potassium permanganate - correct answers c