Lab Quiz 3

Question 1

Answer 1

Sickle cell or hemoglobin S

Question 2

Answer 2

Hemoglobin C
Rectangular hemoglobin crystals

Question 3

Answer 3

Hemoglobin SC
Irregular crystals, sickle cells, target cells

Question 4

Answer 4

Hemoglobin E
MCV = 58; Hb = 13.5
Non-specific target cells

Question 5

Answer 5

Neonate “kiddie” lymphs

Question 6

Answer 6

Small naive lymphocytes

Question 7

Answer 7

Normal lymphocytes

Question 8

Answer 8

Reactive lymphocyte

Question 9

Answer 9

Atypical lymphocyte

Question 10

Answer 10

Reactive lymphocyte

Question 11

Answer 11

Monocyte

Question 12

Answer 12

Anaplasma phagocytophilum
Rodents natural hosts
Fever, severe headache, muscle pain, malaise
<1% fatal
Morula in neutrophils

Question 13

Answer 13

Ehrlichia chaffeensis
Deer natural hosts
Fever and chills, severe headache, muscle pain, rash
3% fatal
Morula in monocytes

Question 14

Answer 14

Bacteria
Bacilli, cocci, spirochete
Bacteria stain blue-purple with romanowsky stains
Rarely present in high enough numbers to be seen on peripheral blood smears

Question 15

Answer 15

Fungi
Yeast: candida, cryptococcus, malassezia furfur
Dimorphic fungi: histoplasma capsulatum, penicillium marneffei

Question 16

Answer 16

Candida albicans
Normal flora
Common cause of health-care associated sepsis
40-60% fatality
Causes respiratory infections and thrush

Question 17

Answer 17

Histoplasma capsulatum
Biphasic mold
Environmental in nitrogen rich soil
Infection is problematic for immuno-compromised persons
Indicator of aids

Question 18

Answer 18

Babesia microti

Question 19

Answer 19

Babesia
Pyriform shapes
Teardrop pairs

Question 20

Answer 20

Babesia
May form tetras or “Maltese crosses”
Not seen in malaria

Question 21

Answer 21

Babesia
Cases with very high parasitemias may occur as extracellular aggregates
Can be confused with schizonts of plasmodia

Question 22

A classical malaria attack lasts how long and consists of what?

Answer 22

6-10 hours
Consists of:
A cold stage (shivering)
A hot stage (fever, headaches, vomiting; seizures in young children)
A sweating stage (sweats, normal temp., tiredness)

Question 23

What are 3 severe forms of malaria

Answer 23

Black water fever
Cerebral malaria
Severe anemia

Question 24

What is the stain of choice for malaria parasites

Answer 24

Giemsa stain

Question 25

What is an alternative to Giemsa stain

Answer 25

Wright stain

Question 26

What does not show with a wright stain?

Answer 26

Schuffner's dots

Question 27

What kind of ph shows Schuffner's dots better

Answer 27

Basic

Question 28

Answer 28

Malaria P. vivax with wright stain No Schuffner's dots

Question 29

Answer 29

Malaria P. vivax with Giemsa stain Visible Schuffner's dots

Question 30

Answer 30

Malaria P. falciparum

Question 31

Answer 31

Malaria - P. falciparum ring stage

Question 32

Answer 32

Malaria - P. vivax ring stage

Question 33

Answer 33

Malaria - P. malariae ring stage

Question 34

Answer 34

Malaria - P. oval ring stage

Question 35

Answer 35

Malaria - P. falciparum trophozoite stage

Question 36

Answer 36

Malaria - P. vivax trophozoite stage

Question 37

Answer 37

Malaria - P. malariae trophozoite stage

Question 38

Answer 38

Malaria - P. oval trophozoite stage

Question 39

Answer 39

Malaria - P. falciparum schizont stage

Question 40

Answer 40

Malaria - P. vivax schizont stage

Question 41

Answer 41

Malaria - P. malariae schizont stage

Question 42

Answer 42

Malaria - P. oval schizont stage

Question 43

Answer 43

Malaria - P. falciparum gametocyte stage

Question 44

Answer 44

Malaria - P. vivax gametocyte stage

Question 45

Answer 45

Malaria - P. malariae gametocyte stage

Question 46

Answer 46

Malaria - P. oval gametocyte stage

Question 47

Answer 47

P. falciparum ring stage Accolade cell can kill within 48 hours

Question 48

Answer 48

P. falciparum gametocytes

Question 49

Answer 49

Malaria rings

Question 50

Answer 50

Malaria trophozoites

Question 51

Answer 51

Malaria Trophozoites

Question 52

Answer 52

Malaria gametocytes

Question 53

Answer 53

Trypomastigote

Question 54

Answer 54

Trypanosoma brucei

Question 55

Answer 55

Trypanosoma cruzi Holds feces Common on US borders More "S" shaped

Question 56

Answer 56

Sickle cell Often found with nucleated RBCs, target cells, and Howell-jolly bodies

Question 57

Answer 57

Hemoglobin C Rod-shaped cells Often has spherocytes and target cells

Question 58

Answer 58

Hemoglobin SC Folded RBCs → look for crystals Odd shapes → kind of look like schistocytes

Question 59

Answer 59

Hemoglobin H

Question 60

Answer 60

Hemoglobin Bart's hydrops fetalis syndrome

Question 61

Answer 61

B- thalassemia minor Hypochromic, microcytic Minor anemia 2 alleles missing Usually contains target cells

Question 62

Answer 62

Beta thalassemia intermedia Contains nucteated RBCs and target cells Treatment needed

Question 63

Answer 63

B- thalassemia major (Cooley's anemia) Will need a blood transfusion Can have elevated or normal cell count

Question 64

Answer 64

Reactive lymphocytes

Question 65

Answer 65

Monocyte

Question 66

Answer 66

Infectious mononucleosis (“kissing disease”) Increased lymphocytes T-cells kill infectious B-cells Epstein-barr virus

Question 67

Answer 67

Viral infection High lymphocyte count or low neutrophil count Atypical lymphocytes

Question 68

Answer 68

Pertussis "whooping cough" Atypical lymph's

Question 69

Answer 69

Serum sickness Dark blue cytoplasm B-lymph Crystallized antibody Plasma cytoid

Question 70

Answer 70

Platelets and platelet agglutination

Question 71

Answer 71

Megakaryocyte fragments Fragments and nRBCs