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Medical Laboratory > Hematology Chp18 > Flashcards

Hematology Chp18 Flashcards

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USMLE® Step 1 flashcards
0
Q

What does MCV mean?

A

Mean corpuscular volume

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1
Q

What does MCH mean ?

A

Mean corpuscular hemoglobin

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2
Q

What does MCHC mean ?

A

Mean cell hemoglobin consentration

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3
Q

What does RDW mean ?

A

Red cell distribution width

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4
Q

What is the purpose of laboratory analysis in hematology?

A

Examining blood to detect pathological conditions

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5
Q

What are the test included in a CBC?

A 
WBC
RBC
Platelet count
Hemoglobin 
Hematocrit
Differential white blood cell count (diff)
Red blood cell indices
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6
Q

What is the function of plasma?

A

Transports nutrients to the tissues of the body
Picks up waste from tissue; eliminated through kidneys
Transports:antibodies, enzymes, and hormones-to regulate the body function

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7
Q

What test is not included in a CBC?

A

Prothrombin time (PT)

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8
Q

How many pints of blood is in the avg adult?

A

10-12 pints of blood

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9
Q

A mature erythrocyte has a …

A

Biconcave shape and no nucleus

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10
Q

Plasma is …..

A

55%of the blood volume

Consist of clear yellowish fluid

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11
Q

In an adult red blood cells (erythrocytes)are formed in the red bone marrow of ?

A 
Ribs 
Sternum
Skull
Pelvic bone
Ends of long bones of limbs
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12
Q

The function of hemoglobin is to ?

A

Transport oxygen

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13
Q

Thrombocytes?

A

Consist of 45% of blood volume

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14
Q

Average life span of a red blood cell is ?

A

120 days

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15
Q

An abnormal increase in the number of leukocytes is ?

A

Leukocytosis

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16
Q

The normal range for red blood cell count for a women is ?

A

4 to 5.5 million/mm3 of blood

17
Q

The normal range for red blood cell count for a men is ?

A

4.5 to 6.2 million/mm3 of blood

18
Q

Mr. Petersons hemoglobin is 16 this is ?

A

Within reference range

19
Q

Mrs. Nelsons white blood cell count of 14,500 this is ?

A

Above the reference range

20
Q

Where do leukocytes do their work?

A

Tissues

21
Q

Pus consist of all of the following except?

A

Erythrocytes

22
Q

Low hemoglobin reading may occur with all of the following except ?

A

Polycythemia

23
Q

Which of the following results in leukopenia?

A

Chemotherapy

24
Q

What do we call the movement of leukocytes through the pores of the capillaries?

A

Diapedesis

25
Q

What is the normal range for platelet count in an adult ?

A

150,000-400,000/mm3 of blood

26
Q

Mr.johnson has a Hct of 60?

A

It’s increased

27
Q

Which of the following RBC indices measures average size of a single red blood cell ?

A

MCV-mean corpuscular volume

28
Q

What is the most common cause of microcytic anemia?

A

Low MCV

Lack of iron in the diet: iron deficiency anemia

29
Q

The nucleus of a neutrophil generally contains?

A

3 to 5 lobes

30
Q

An increase in neutrophils occurs during?

A

Acute infections

31
Q

Which of the following RBC indices measures the average concentration in a single red blood cell ?

A

MCHC-mean cell hemoglobin concentration

32
Q

Which of the following is not a granular leukocyte?

A

Monocyte

33
Q

The immature form of a neutrophil is a ?

A

Band

34
Q

The primary function of a neutrophil is to ?

A

Engulf pathogens through phagocytosis

35
Q

The results of a differential WBC indicates there are no basophils?

A

This considered within the reference range

36
Q

An increase in lymphocytes usually occurs with?

A

Infectious mononucleosis

37
Q

What is the function of warfarin?

A

Is to inhibit the formation of blood clots

38
Q

Which is the largest whit blood cell ?

A

Monocyte

39
Q

An increase in eosinophils often occurs with?

A

Allergic conditions

40
Q

What is the PT/INR of an healthy individual with normal clotting abilities?

A

0.8-1.2

41
Q

How often should a patient on warfarin therapy perform a PT/INR test?

A

Every 2 to 4 weeks

Medical Laboratory (1 decks)

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