Putoff/Robbins WBC Flashcards

1
Q

2 essential properties of HSC that are required for the maintenance of blood products?

A

Pluripotency and self renewal

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2
Q

Where is the chief site of blood cell ruction in the fetus and then in the adult?

A

Liver

BM of axial skeleton

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3
Q

In adults, bone marrow biopsy and aspiration is typically performed where?

A

PSIS

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4
Q

What two blood products do we find circulating in the peripheral blood? The blood is their home?

A

Platelets and RBC

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5
Q

What blood products are found more often in the tissue?

A

Leukocytes

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6
Q

What are the top two most common leukocytes found in the body?

A

Neutrophils and lymphocytes

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7
Q

Platelet production can be increased by how much for need?

A

10 fold

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8
Q

Two places that EPO is produced and what hemoglobin level is EPO released at a constant rate?

A

Kidney and liver

Above 10, EPO will be released at a constant rate

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9
Q

How long does it take a RBC to move from bone marrow to peripheral blood? How many of our RBCs do we replace a day?

A

4 days

1%

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10
Q

What two immature cells are found in a left shift when there is a severe infection? What does the nucleus of each cell look like?

A

Metamyelocyte, called the juvenile granulocytes which has an indented nucleus
Band with a hotshot nucleus.

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11
Q

When you spin down the blood, what are the three layers top to bottom?

A

Plasma (water and proteins)
Buffy (WBCs and platelets)
RBCs

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12
Q

Difference between plasma and serum?

A

Serum is whats left of the plasma after it clots

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13
Q

Top 3 proteins in the blood?

A

Albumin, fibrinogen and globulin

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14
Q

3 characteristics of solid tumors that do not apply to lymphomas and Leukemias?

A

Metastasis, differentiation, and and vascularity

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15
Q

80% of circulating lymphocytes are what kind of cell?

A

T cells

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16
Q

What is the pathogenesis of HLH, what is the problem here, what are the major players? What is the effect?

A

Systemic activation of macrophages and CD8 T cells that eat up blood cell progenitors in the marrow and formed elements in the peripheral tissue.
Cytopenias, systemic inflammation, shock like picture, SIRS

17
Q

3 clinical signs of HLH?

A

Super sick, big spleen, big liver.

18
Q

4 lab values for HLH?

A

Anemia, thrombocytopenia, high ferritin and soluble IL2