Fixative Study guides, Class notes & Summaries

PRAXIS Art Content Knowledge (5134): Art Making and Media Processes Name three art materials that are toxic - ANS Cadmium, lead and polyester resin Which pigments used in paint, ink, or glaze have a greater level of toxicity? - ANS Cadmium, lead, cobalt, manganese, Mercury What is a safe way to dispose of oily rags? - ANS soak them in water in a metal container with a lid. As long as the lid is sealed, you can keep the rags in the container until you're ready to take them to a di...

Carsons Histotechnology Question and answers already passed 2023/2024Mordant . substance’s or metals that act as a link between dye and tissue A mordant is a metal with a valency of at least two. The two commonest metals used in histotechnology are aluminum and ferric iron, both with valencies of three. The attachment of mordant to dyes is by means of a covalent and a coordinate bond. Fixative additive fixation- stabilizes proteins by denaturing proteins (chemical, heat) and combin...

The 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 - Answer-a. enzymes are proteins and rendered inactive by fixation Which of the following fixatives contains picric acid, formalin and acetic acid a. Zenker b. Helly c. Bouin d. Zamboni - Answer-c. Bouin The ratio of fixative to tissue should be a. 1:2 b. 5:10 c.15:20 d. 25:50 - Answer-c. 15 times to 20 times Tissue must be wa...

ECOFREINDLY fecal fixative Formalin Schaudinn's Polyvinyl alcohol Merthiolate-iodine formalin - answer: Polyvinyl alcohol Which of the ff is assc w LOEFFLER'S SYNDROME Ascaris lumbricoides Enterobius verimicularis Trichuris trichiura Wuchereria bancrofti - answer: Ascaris lumbricoides VISCERAL LARVAL MIGRANS (VLM) and OCULAR LARVA MIGRANS (OLM) are caused by accidental ingestion of eg

Acetic acid CORRECT ANSWER-This fixative does not fix or destroy carbohydrates, and it does not fix lipids. It penetrates very rapidly and leaves tissue very soft. It is added to many fixative mixtures because of its ability to fix nuclei. Glutaraldehyde CORRECT ANSWER-Techniques using Schiff reagent, such as the periodic acid-Schiff (PAS) stain, cannot be used on __________ fixed tissues because false positive results will be obtained. Glyoxal CORRECT ANSWER-This fixative is the smallest ...

What are the two common staining methods for nucleic acid in histology? CORRECT ANSWER-1. Feulgen Reaction 2. Methyl Green-Pyronin Method (DNA/RNA) Feulgen Reaction tests for what? CORRECT ANSWER-DNA What does the Schiff reagent bind to in the Feulgen Reaction? CORRECT ANSWER-Aldehyde group created by the hydrolysis of DNA Why can't we use the Bouin fixative on tissues being tested with Feulgen? CORRECT ANSWER-Bouin hydrolyzes tissues In Feulgen reactions, what happens when the hyd...

Maternal Child Nursing 5th Edition by McKinney- ISBN- 978-0323401708 TEST BANK Chapter 32: Women’s Health Care Verified 2024 Practice Questions and 100% Correct Answers with Explanations for Exam Preparation, Graded A+ Which piece of the usual equipment setup for a pelvic examination is omitted with a Pap test? a. Gloves and eye protectors b. Speculum c. Fixative agent d. Lubricant ANS: D Lubricants interfere with the accuracy of the cytology report. Gloves and eye protectors, spe...

fluid portion of the cell outside the nucleus - cytoplasm Red/Orange stain or dye - Eosin Chemical that prevents deterioration of cells or tissues - Fixative Blue stain or dye - Methylene blue The central structure of a cell which contains DNA and controls cell growth and function is called - nucleus, nuclei The form and structure of cells, tissues, and organs - Morphology A solution that resists a sudden marked change in pH when an acid or base is added - Buffer An immature neutrophil. ...

During tissue processing, what is the correct sequence of steps ? a) clearing, dehydration, infiltration b) clearing, infiltration, dehydration c) dehydration, infiltration, clearing d) dehydration, clearing, infiltration - correct answer d) dehydration, clearing, infiltration If a person has A- blood, who can they receive from within the ABO blood group? - correct answer A-, AB- What is the purpose of fixation? - correct answer To stabilize proteins & colloidal material in ce...

The primary purpose of fixation is - Answer To stop enzymatic action Which fixative contains picric acid, formalin, and acetic acid? - Answer Bouin The volume of fixative should exceed the volume of the tissue by - Answer 15-20 times Tissue must be washed in water after fixation in - Answer Zenkers Which fixative contains formalin, potassium dichromate, and mercuric chloride? - Answer Helly Precipitate left in tissues that have been fixed in solutions containing mercuric...