Microscopy

Question 1

Increased space between red blood cell indicates

Answer 1

Anaemia

Question 2

What is the name of the centre of a normal RBC?

Answer 2

Central pallor

Question 3

What is the normal size of the central size of a RBC?

Answer 3

1/3 of cells

Question 4

Increased size of red cell pallor indicates ….

Answer 4

Hypochromic

Question 5

What cell is used as a reference to see if the size of red cells is normal?

Answer 5

Normal red cell is the size of a lymphocyte nucleus

Question 6

What causes tear drop red cells?

Answer 6

Autoimmune haemolytic anaemia or megaloblastic anaemia

Question 7

What causes red cell fragmentation?

Answer 7

Mechanical destruction eg valve

Question 8

What does a normal neutrophil appear like?

What does an abnormal neutrophil appear like?

Answer 8

Normal 3-5 nuclear segments

Abnormal hypersegmented nucleus, granulation, vacuolation

Question 9

What is a Barr body?

Answer 9

Seen attached to segment of neutrophil nucleus, indicates XX phenotype X inactivation

Question 10

What is a toxic neutrophil seen in?

Hypergranulation

Answer 10

Sepsis

Question 11

What parasite infects inside red blood cells?

Answer 11

Malaria plasmodium

Question 12

What causes cigar / pencil red cells?

Answer 12

Iron deficiency anaemia

Question 13

What is poikilocytosis?

Answer 13

Red cells vary in shape

Question 14

What is anisocytosis?

Answer 14

Red cells vary in size

Question 15

What is acanthocytosis aka spur cells? (Appearance and causes)

Answer 15

Spikey appearance of red cell membrane

Alcoholism, Zieve syndrome, hepatitis, splenomegaly, hypothyroid, liver disease

Question 16

Burst red cells are a sign of dysfunction of what organ?

Answer 16

Renal