Leukocytes Flashcards

1
Q

Maturation time

A

14 days

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2
Q

Diameter: 14-20 um

A

Myeloblast

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3
Q

Diameter: 16-25 um

A

Promyelocyte

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4
Q

Diameter: 15-18 um

A

Myelocyte

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5
Q

Diameter: 14-16 um

A

Metamyelocyte

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6
Q

Diameter: 9-15 um

A

Band/Stab

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7
Q

Diameter: 9-15 um

A

Segmented Neutrophil

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8
Q
  • High N:C ratio (8:1 to 4:1)
  • Slightly basophilic cytoplasm, fine nuclear chromatin
  • 2-4 visible nucleoli
A

Myeloblast

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9
Q
  • The nucleus is round to oval and is often eccentric.
  • A paranuclear halo or “hof” is usually seen
  • The cytoplasm is evenly basophilic
A

Promyelocyte

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10
Q

The cytoplasm is evenly basophilic

A

Promyelocyte

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11
Q

Last stage capable of cell division

A

Myelocyte

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12
Q

Nucleus has more heterochromatin; cytoplasm is more lavender-pink than blue

A

Myelocyte

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13
Q

Start of Synthesis of Secondary Granules

A

Myelocyte

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14
Q

Start of Synthesis of Tertiary Granules

A

Metamyelocyte

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15
Q

The cytoplasm contains very little residual RNA (little or no basophilia)

A

Metamyelocyte

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16
Q

Indented nucleus (kidney bean-shaped or peanut shaped)

A

Metamyelocyte

17
Q

Youngest stage to appear normally in peripheral circulation

A

Band Neutrophil

18
Q

The nucleus is highly clumped; indentation exceeds one
half the diameter of the nucleus

A

Band Neutrophil

19
Q

Secretory granules / secretory vesicles are formed

A

Band Neutrophil

20
Q

Secretory granules continue to be formed

A

Segmented Neutrophil

21
Q

Presence of 3-5 nuclear lobes connected by thread-like filaments

A

Segmented Neutrophil

22
Q

T or F
Myeloblast, Promyelocyte, Myelocyte are stages capable of mitosis

A

T

23
Q

Appearance of Granules:
PROMYELOCYTE

A

Primary granules (Non-specific Granules)

24
Q

Appearance of Granules:
MYELOCYTE

A

Secondary granules (Specific Granules)

25
Q

Appearance of Granules:
METAMYELOCYTE

A

Tertiary Granules

26
Q

Appearance of Granules:
BAND / STAB CELL

A

Secretory Granules

27
Q

term for < 3 lobes

A

hyposegmented

28
Q

term for > 3 lobes

A

hypersegmented