Exam (elaborations)
HTL ASCP EXAM- FIXATIVES (N) QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
- Course
- Institution
HTL ASCP EXAM- FIXATIVES (N) QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
[Show more]
Content preview
HTL ASCP EXAM- FIXATIVES (N)QUESTIONS AND ANSWERS WITH
SOLUTIONS 2024
Non coagulant, penetrates quickly and leaves tissues very soft. Used often as an additive to precipitate
and preserve the nucleoproteins and fix the nuclei. - ANSWER Acetic Acid
Swells tissues dramatically by breaking collagen bonds and allowing bonds to absorb water. Used as
additive to counter-act the shrinking effect of other fixatives. - ANSWER Acetic Acid
Non coagulant and additive fixative that reacts with amino groups that link protein chains together. -
ANSWER Formaldehyde
Greatest binding occurs between pH 7.5-8. - ANSWER Formaldehyde
Preserves lipids but does not make them insoluble and can be lost during subsequent processing. -
ANSWER Formaldehyde
Does not preserve carbohydrates but stabilizes and fixes the proteins to trap glycogen. - ANSWER
Formaldehyde
Penetrates tissue quickly, fixes slowly and has the least shrinking effect any fixative. - ANSWER
Formaldehyde
Beside ethanol and acetone, this hardens tissue more than any other fixative. - ANSWER Formaldehyde
Formed when acidic (<6.0 pH) solutions of formaldehyde act on bloody tissue. - ANSWER
Microcrystalline dark brown pigment
When formalin pH drops below 6.0 this pigment forms and can be removed by alcoholic picric acid or
alkaline alcohol. - ANSWER Black acid hematin / formalin pigment
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Performance. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
82215 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
