1. Which of the following blood smears these illustrations would be best suited for performing a differential count: Top Photo Bottom Photo Feedback An even distribution of red blood cells on a smear is necessary for accurate differential counts. 2. Choose the term that describes the most prominent finding in this peripheral smear: Rouleaux Normal RBCs Anisocytosi s Feedback Anisocytosis is a variation in the size of the red blood cells. This slide shows poikilocytosis, but anisocytosis is more prominent here. 3. The intracellular precipitates seen in the RBCs in this illustration is termed: Dohle bodies Heinz bodies May-Hegglin anomaly Reticulocytes Feedback Heinz bodies occur as the result of denaturation and precipitation of hemoglobin, and are often attached to the red cell membrane. They require staining with crystal violet or methyl violet to be visible. They may be seen in thalassemia, with unstable hemoglobins, or during a hemolytic episode in G6PD deficiency. 4. The growth seen here on PPLO agar is most likely caused by: Streptococcus pneumoniae Klebsiella pneumoniae

Mycobacterium Mycoplasma Feedback PPLO agar is used for the isolation and cultivation of Mycoplasma species. 5. A definitive diagnosis of malaria can be made by: Serological testing Culture techniques Demonstration of the organisms in peripheral blood Biochemical reactions Feedback Diagnosis of malaria may require thick smears as well as conventional thin blood smears. 6. Identify the cell in this illustration indicated by the arrow: Myelocyte Monocyte Metamyelocyte Lymphocyte

7. Identify the Revolving nosepiece and Mechanical stage K, L C, D F, G A, B

8. I may be found in stool. Taenia saginata scolex Diphyllobothrium latum scolex Taenia solium scolex

Echinococcus scolex Feedback

granulosus

The scolex of Taenia solium may be distinguished from the other cestode scolices by its four distinct suckers and the presence of a rostellum armed with hooklets. 9. Based on the phenotype of the RBC screening cells, and patient results given below, which of the following antibodies cannot be ruled out: Anti-C Anti-Jka Anti-M AntiFya

Feedback It is only possible to rule out on screening cell 2 since it demonstrates a negative reaction with the patient serum. Anti-C cannot be ruled out since the antigen is heterozygous on screening cell 2. Anti-Fya cannot be ruled out since this antigen is not present on screening cell 2. Anti-M and anit-Jka can be ruled out since the antigens are homozyous while demonstrating a negative reaction on screening cell 2 10. Identify the urine sediment elements indicated by the arrow in the illustration: Cholesterol crystals Triple phosphate crystals Amorphous urate crystals Ammonium crystals Feedback Triple phosphate crystals appear as colorless prisms with 3 to 6 sides and oblique ends, or as "feathery sleeves". The have been described as "coffin lid shaped", and can occur normally in alkaline urine. They may indicate the presence of an infection. biurate

11. Identify the urine sediment elements shown by the arrow:

Cylindroids Mucus threads Hyaline casts Budding yeast Feedback Mucus thread appear as long, thin ribbon like threads that are generally transparent. They are normal in small numbers in the urine. 12. This suspicious form was recovered in blood. Plasmodium vivax ring form Plasmodium form Plasmodium form malariae falciparum band ring

Pseudoparasite Feedback Plasmodium falciparum ring forms often resemble a walkman headset by containing two chromatin dots instead of one, as commonly seen in the other Plasmodium species. These dots serve as connecting points for the ring of cytoplasm. 13. Identify the Eye piece and Binocular (observation tube): B, E G, D A, K J, F

14. The elements indicated by the arrows are more likely to be seen in patients with which condition: Bacterial infection Nephrotic syndrome Diabetes Renal failure

Feedback Yeast cells as a cause of infection are more commonly found in patients with diabetes mellitus, but can also represent contaminants with no clinical significance. They should not be confused with erythrocytes. The presence of budding helps with the identification.

15. Identify the cell in this illustration indicated by the arrow: Eosinophi l Monocyte Basophil Neutrophi l Feedback Eosiniphils have characteristic large prominent orange granules. 16. What type of cast is shown in the illustration: WBC casts RBC casts Waxy casts Granular casts Feedback RBC casts may appear as brown to almost colorless. Red cells can clearly be seen within the cast. This type of cast is diagnostic of glomerular disease or intrarenal bleeding. 17. This suspicious form was found in stool. Pseudoparasite Hookworm rhabditiform larva Strongyloides larva rhabditiform

Strongyloides filariform larva Feedback

Although this suspicious form resembles an intestinal nematode larva, internal structures necessary for it to function as well as to identify it as a parasite are lacking. Numerous such pseudoparasites may be present in stool samples.

18. This suspicious form was found in stool. Pseudoparasite Hookworm rhabditiform larva Strongyloides larva rhabditiform

Strongyloides filariform larva Feedback Although this suspicious form resembles an intestinal nematode larva, internal structures necessary for it to function as well as to identify it as a parasite are lacking. Numerous such pseudoparasites may be present in stool samples.

19. The most likely organism to be cultured on the Lowenstein-Jensen agar slant illustrated here would be: Crytococcus Chlamydia Mycobacteria Listeria

20. This suspicious form, shown below at both low (10X) and high dry (40X) power, measures 90 micro meters by 42 micro meters. It was seen in a stool sample. Hookworm egg Pseudoparasite Ascaris lumbricoides egg Diphyllobothrium egg Feedback The mature eggs of Ascaris lumbricoides are readily visible at both 10X and 40X dry. The organism size as well as the presence of an outer albuminous coating help to identify the egg. latum

21. Which of the following conditions is frequently associated with these cells? Hemolytic anemia Chronic blood loss Megaloblastic anemia Sickle cell anemia Feedback Hypersegmented neutrophils are associated with megaloblastic anemias.

22. The cell indicated by the arrow in this illustration is called: Hair cell Smudge cell Megakaryocyte Blast Feedback Smudge Cells (bare nuclei) are commonly seen in blood smears from patients with chronic lymphocytic leukemia. 23. Identify the urine sediment elements shown by the arrow: Cholesterol crystals Uric acid crystals Amorphous crystals Cystine crystals Feedback Cystine crystals are characteristically seen as colorless hexagonal plates in acid urine. They may be confused with hexagonal uric acid crystals. They can be differentiated from uric acid by their solubility in dilute hydrochloric acid versus crystalline uric acid, which is not soluble in dilute hydrochloric acid. The cyanidenitroprusside test can be used to confirm the presence of cystine in urine. Cystine crystals are not present in normal urine. 24. Identify the urine sediment elements shown by the arrow: urate

Yeast WBCs Fat Starch crystals Feedback Starch crystals often contaminate normal urine. They appear round to oval, are highly refractile, with an irregular indentation in the center. They may exhibit the "Maltese cross" appearance under polarized light. 25. The RBCs seen in this illustration are indicative of:

Normal cells Microcytic cells Macrocytic cells Hypochromic cellsFeedback Normal red cells are uniformly shaped and sized with 2-3mm of central pallor. 26. The McFarland Comparison Card shown in the illustration is used to:

Perform sensitivity testing Standardize concentrations of organisms Q.C. broth media Determine MICs

27. The WBC indicated by the arrow in this illustration is exhibiting:

Dohle bodies Hypersegmentation Degranulation Pelger-Huet

anomalyFeedback Pelger-Huet anomoly is an autosomal dominant condition characterized by hyposegmentation of neutrophils. Decreased nuclear segmentation may also be seen as an acquired disorder in cases of granulocytic leukemia, myeloproliferative disorders, infections, and after exposure to certain drugs.Image courtesy and copyright of the Clinical Chemistry and Hematology Laboratory, Wadsworth Center, NY State Department of Health (http://www.wadsworth.org)

28. The abnormal RBC shape seen in this illustration is:

Sickle cell Thorn cell Fragmented cell Crenated cellFeedback Crenated red cells usually occur as an artifact during the preparation of blood smears.

Acknowledgement

I m thank full to my God he give me And also I thank full my friend Mr. Sami Khan he help me in down load, Thanks,

Muhammad Younis Lab. Technician NNP, Rabigh, KSA 00966-591-342865 Unis_memon85@yahoo.com