Pathology Volume 2 Flashcards
What muscle inserts on the globe at the macula?
Inferior oblique
What is the most common histiopathologic fixative?
10% neutral buffered formalin
What is formalin?
40% formaldehyde in water
How long do globes require fixation prior to processing for pathologic examination?
12 to 24 hours
What material mechanically stabilizes fixed tissues so that cutting of sections is possible?
Paraffin
What type of fixative is used for electron microscopy?
Glutaraldehyde
What type of fixative is used for urate crystals of gout?
Ethanol
What type of fixative is used for immunofluorescence?
Michel fixative
What type of fixative is used for muscle differentiation?
Zenker acetic fixative
What type of stain is associated with cavemous optic atrophy?
Alcian blue
What is Ziehi-Neasen stain used to detect?
Acid-fast organisms
What is Thioflavin T stain used to detect?
Amyloid
What stain is associated with the elastic layer of the temporal artery?
Verhoeff-van Gieson
What stain is associated with band keratopathy?
von Kossa
What is the most common location of goblet cells?
Fornices and plica semiluminaris
What are the three types of cells found within the caruncle?
1.Sebaceous glands 2. Hair follicles 3.Accessory lacrimal glands
What is the most common location of dermolipoma?
Superotemporal quadrant
What condition is associated with Horner-Trantas dots?
Vernal keratoconjunctivitis
How does dermolipoma differ from dermoid histopathologically?
Dermolipoma lacks dermal adnexal structures
What is the most common type of hamartoma of the conjunctiva?
Hemangioma
What is the most common type of organism causing conjunctivitis in children?
Bacteria (e.g. Haemophilus influenza)
What serotypes of chlamydia are associated with trachoma?
Serotypes A, B, and C
What serotypes of chlamydia are associated with conjunctivitis?
Serotypes D through K
What is a common cause of conjunctivitis in patients with AIDS?
Microsporidia
