HISTPATHOLOGY PRELIM EXAMINATION (LECTURE)

ALL OF THE FOLLOWING ARE GOOD CHARACTERISTICS OF A FIXING FLUID, EXCEPT:

I. IT MUST BE CHEAP, STABLE AND SAFE TO HANDLE

II. PREVENTS THE BACTERIAL GROWTH

III. CAUSING MINIMAL ALTERATION IN THE TISSUE

IV. IT MUST BE SENSITIVE TO THE COMPONENT

• A. I ONLY

• B. II,III

• C. III ONLY

• D. IV ONLY

• E. NONE OF THE ABOVE

ALL OF THE FOLLOWING ARE MICROANATOMICAL FIXATIVES, EXCEPT:

I. FORMOL SUBLIMATE

II. HELLY'S FLUID

III. FLEMMINGS FLUID

IV. BRASILS FLUID

• A. I,II

• B. II,III

• C. IV ONLY

• D.II ONLY

• E. NONE OF THE ABOVE

THE AMOUNT OF THE FIXING FLUID SHOULD BE APPROX.

• A. 20-30 TIMES

• B. 5-10 TIMES

• C. 40-50 TIMES

• D. 10-20 TIMES

• E. NONE OF THE ABOVE

MOST WIDELY USED FIXATIVE FOR ELECTROM MICROSCOPY:

I. OSMIUM TETROXIDE

II. PICRIC ACID FIXATIVE

III.CHROMATE FIXATIVE

IV. METALLIC FIXATIVE

• A. I ONLY

• B. IV ONLY

• C. II,III

• D.I, IV

• E. ALL OF THE ABOVE

FOR TUMOR BIOPSIES;

I. B5-FIXATIVE

II. HEIDENHAINS SUSA

III. REGAUDLS FLUID

IV. ZENKER'S FLUID

• A. I, II

• B. III,IV

• C. II ONLY

• D. III ONLY

• E. EITHER II OR III

TISSUE IS OPAQUE, DUE TO THE PRESENCE OF ALCOHOL;

I. INCOMPLETE DEHYDRATION

II.INCOMPLETE IMPREGNATION

III. INSUFICIENT CLEARING

IV. INCOMPLETE FIXATION

• A. I,III

• B. II,III

• C. II ONLY

• D. III ONLY

• E. I,II

ORGAN THAT SHOULD NOT BE DISSECTED BEFORE THEY ARE FIXED:

I. UTERUS

II.LUNGS

III.EYES

IV.PANCREAS

• A. I ONLY

• B. II ONLY

• C. II,III

• D. III, IV

• E. NONE OF THE ABOVE

THE PROCESS OF DECALCIFICATION IS BEST PERFORMED;

I. BEFORE AND AFTER WASHING-OUT

II. AFTER FIXATION

III. BEFORE DEHYDRATION

IV. BEFORE FIXATION

• I ONLY

• II ONLY

• III ONLY

• I,III

• I,IV

IDEAL DECALCIFICATION TIME;

I. 22-48 HRS

II. 24-48 HRS

III. 7-14 DAYS

IV.15-20 HRS

• I ONLY

• II ONLY

• III ONLY

• I,II

• III,IV

SIMPLEST, COMMON AND BEST EMBEDDING MEDIUM FOR ROUTINE TISSUE PROCESSING.

I.PARAFFIN WAX

II.ESTER WAX

III.CARBOWAX

IV. PARLODION WAX

• I,II

• III,IV

• I,III

• II,IV

• NONE OF THE ABOVE