Deck 9: Leukopoiesis and Leukopoietic Function

Question 1

One of the primary glands responsible for lymphocyte origination in the infant is the:

A) Thymus gland
B) Adrenal gland
C) Thyroid gland
D) Pituitary gland

Answer 1

A

Question 2

Identify the cell at the end of the pointer.

A) Band neutrophil
B) Metamyelocyte
C) Promyelocyte
D) Monocyte

Answer 2

A

Question 3

The CBC results for a 3-month-old child are as follows:

The absolute lymphocyte count in this patient would be:

A) 1.2  10⁹/L
B) 2.4  10^9/L
C) 7.1  10⁹/L
D) 7.5  10⁹/L

Answer 3

C

Question 4

The spleen harbors approximately ___ of the white blood cell population

A) one-fourth
B) one-half
C) one-third
D) three-fourths

Question 5

Identify the cell at the end of the pointer.

A) Band neutrophil
B) Metamyelocyte
C) Promyelocyte
D) Monocyte

Question 6

The amount of time a granulocyte spends in the circulation before migrating into the tissues is normally:

A) 8 hours
B) 48 hours
C) 5 days
D) 20 days

Question 7

Which of the following CD markers is more appropriately associated with the myelocyte?

A) CD4, CD8
B) CD33, CD13, CD14
C) CD45, CD33, CD13
D) CD19, CD22

Question 8

The N:C ratio in a myeloblast is:

A) 2:1
B) 4:1
C) 3:1
D) 5:1

Question 9

All of the following are features of the lymphatic system except:

A) Stimulation of the kidney by EPO
B) Blood filtration
C) Antibody generation
D) Lymphopoiesis

Question 10

In automated hematology, what is the definition of the delta check?

A) Spinning the sample for hematocrit value
B) Comparison to previous value
C) Flagging criteria
D) Performing a manual platelet count

Question 11

The plasma cell is responsible for:

A) Humoral immunity
B) Cell mediated immunity
C) Tumor suppression
D) Delayed hypersensitivity

Question 12

Identify the cell at the end of the pointer.

A) Lymphocyte
B) Myeloblast
C) Promyelocyte
D) Monocyte

Question 13

Lymphocyte concentrations in peripheral blood are greatest during what age interval?

A) Immediately after birth
B) Older adult (40 to 70 years)
C) Young adult (16 to 40 years)
D) Young child (1 to 4 years)

Question 14

The "marginating pool" of neutrophils is located:

A) In the kidneys
B) In the tissue
C) Next to marrow sinuses
D) On the blood vessel walls

Question 15

At present, most lymphocyte subpopulations are recognized by their CD markers.
CD refers to:

A) Codon designation
B) Cluster designation
C) Cytoplasmic designation
D) Cytokine designation

Question 16

The initial appearance of specific granulation in the granulocytic series is predominantly seen in the:

A) Promyelocyte
B) Metamyelocyte
C) Myelocyte
D) Eosinophil

Question 17

The absolute WBC count refers to the percentage of a particular cell counted from the 100 WBC differential.

Question 18

An adult has a total white count of 4.0  10⁹/L.The differential count is as follows:
Segmented neutrophils 25%
Lymphocytes 65%
Bands 5%
Monocytes 5%
If the normal values for absolute lymphocyte count are 1.2 to 3.4  10⁹/L, which of the following is true?

A) The absolute number of lymphocytes is low.
B) There is an absolute lymphocytosis.
C) There is a relative lymphocytosis.
D) There is an absolute and a relative lymphocytosis.

Question 19

There are ___ maturation stages in the neutrophil.

A) five
B) four
C) three
D) six

Question 20

The primary function of lymphocytes is immunologic.