6TH PRETEST Flashcards
In silver impregnation techniques, use of improperly cleaned glassware results in:
a. absence of silver staining
b. nonselective silver precipitation
c. inadequate counterstaining
d. inability to tone
b. nonselective silver precipitation
The most frequent fiber found in connective tissue is:
a. reticulin
b. elastin
c. collagen
d. myelin
c. collagen
Select the sudanophilic connective tissue component:
a. elastin
b. reticulin
c. adipose
d. cartilage
c. adipose
In staining methods for reticulin, potassium permanganate, phosphomolybdic acid, and periodic acid function as:
a. reducers
b. oxidizers
c. sensitizers
d. toners
b. oxidizers
The hematoxylin of choice for nuclear staining in lengthy and acidic trichrome methods is:
a. alum hematoxylin
b. phosphotungstic acid hematoxylin
c. chrome-alum hematoxylin
d. iron hematoxylin
d. iron hematoxylin
Select the proteins that form the thick and thin filaments of skeletal muscle fibers:
a. fibrin and fibrinogen
b. collagen and tropocollagen
c. actin and myosin
d. thrombin and prothrombin
c. actin and myosin
In the Verhoeff-Van Gieson technique for elastic fibers, collagen stains:
a. red
b. blue
c. black
d. yellow
a. red
A modified connective tissue structure which nourishes and supports epithelial cells is called:
a. plica circularis
b. muscularis mucosa
c. adventitia
d. basement membrane
d. basement membrane
This histological feature is unique to cardiac muscle:
a. cross-striations
b. peripherally located nuclei
c. intercalated discs
d. non-branching fibers
c. intercalated discs
A phosphotungstic acid-hematoxylin solution will ripen naturally over several weeks, but can be ripened for immediate use by adding:
a. potassium permanganate
b. aluminum sulfate
c. acetic acid
d. alcohol
a. potassium permanganate
Two eosinophilic tissue components that may be difficult to distinguish morphologically are:
a. elastic and skeletal muscle
b. cartilage and ground substance
c. collagen and smooth muscle
d. peripheral nerve and cardiac muscle
c. collagen and smooth muscle
Select a commonly used connective tissue procedure that stains collagen blue:
a. Masson trichrome
b. Van Gieson
c. Movat pentachrome
d. Gomori one-step trichrome
a. Masson trichrome
Stains for simple lipids are performed on:
a. routinely processed paraffin sections
b. frozen sections
c. celloidin processed sections
d. glycol methacrylate sections
b. frozen sections
The phosphotungstic acid-hematoxylin (PTAH) stain is useful for demonstrating:
a. edema fluid
b. muscle striations
c. ground substance
d. reticulin net
b. muscle striations
With the Verhoeff-Van Gieson technique, elastic fibers stain:
a. red to purple
b. blue-black to black
c. yellow to brown
d. blue to blue-green
b. blue-black to black
The amorphous transparent gel-like material that forms the bulk of extracellular content in connective tissue is known as:
a. basal lamina
b. lamina propria
c. mesenchyme
d. ground substance
d. ground substance
A preferred fixative for demonstrating simple fats in tissues is:
a. Zenker
b. Helly
c. Schaudinn
d. 10% neutral buffered formalin (NBF)
d. 10% neutral buffered formalin (NBF)
Although the periodic acid-Schiff (PAS) is not a conventional stain for reticulin, under certain conditions these fibers are PAS-positive and they are also:
a. stainable with neutral red
b. stainable with orcein
c. argyrophilic
d. basophilic
c. argyrophilic
In the Masson trichrome method, muscle fibers are colored:
a. red
b. blue
c. yellow
d. green
a. red
Another name for fat cells is:
a. APLD cells
b. myocytes
c. adipocytes
d. histiocytes
c. adipocytes
Elastic fibers have an affinity for:
a. sudan
b. indigo
c. brazilin
d. orcein
d. orcein
Using the Mallory phosphotungstic acid-hematoxylin (PTAH) method, skeletal muscle striations stain:
a. blue
b. red
c. black
d. yellow
a. blue
The PTAH stain is useful in the diagnosis of a rhabdomyosarcoma, as this tumor is a malignant neoplasm of:
a. smooth muscle
b. skeletal muscle
c. epithelium
d. glands
b. skeletal muscle
Muscle that histologically contains cytoplasmic cross-striations and has nuclei located at the edge of the fibers is classified as:
a. smooth
b. visceral
c. skeletal
d. cardiac
c. skeletal
A malignant neoplasm of connective tissue origin is classified as a/an:
a. carcinoma
b. sarcoma
c. adenoma
d. leiomyoma
b. sarcoma
