Question 1

________________may be evident in the case of lead exposure.

Accepted Answer

A variety of symptoms and health effects may be evident in the case of lead exposure. These can range from acute to chronic and depend on the level and duration of exposure. In children, lead exposure can lead to developmental delays, learning difficulties, irritability, weight loss, sluggishness, and fatigue. In severe cases, it can cause neurological damage, seizures, and even coma.

In adults, symptoms can include high blood pressure, joint and muscle pain, difficulties with memory or concentration, headache, abdominal pain, mood disorders, reduced sperm count and abnormal sperm, and in some cases, anemia. Chronic exposure to high levels of lead can lead to kidney damage and can also affect the cardiovascular and immune systems.

It is important to note that lead exposure is particularly dangerous for children and pregnant women, as it can cause serious developmental harm to fetuses and young children, even at low levels of exposure. If lead exposure is suspected, it is crucial to seek medical attention and to identify and remove the source of lead to prevent further exposure.

Question 2

Suppose that on a WBC differential the percentage of lymphocytes is increased and some of these are "reactive" lymphocytes. What condition is associated with these results?

Accepted Answer

Patients with infectious mononucleosis have increased lymphocyte counts because of the viral infection, and their lymphocytes are not typical in appearance; they are described as "reactive" lymphocytes. The other conditions listed here do not demonstrate the same pattern.

Question 3

The complete blood count is a comprehensive group of tests that give information about the red blood cells, white blood cells, and the platelets.

Accepted Answer

The complete blood count provides a comprehensive overview of the cells present in the specimen, the hemoglobin concentration of the cells, and the percentage of red cells as compared to the total blood volume.

Question 4

Which of these terms does not refer to the distinctive shape of a red blood cell?

Accepted Answer

Red blood cells may be described in many ways. Those that appear with a distinctive recognizable shape are given specific titles. Target, helmet, and sickle are all specific cell shapes. Anemic is not a term used to describe a specific cell shape.

Question 5

When an automated hematology analyzer utilizes electrical impedance for measurement of the formed elements in the blood, the different cell types are identified by the instrument utilizing which measurement?

Accepted Answer

The voltage is changed when the cells pass through the electrical current in these analyzers. The height of the voltage changes indicates which type of cell (size and shape) is passing through the aperture.

Question 6

An abnormal excess of red blood cells is termed:

Accepted Answer

Anemia refers to a condition with a decreased amount of hemoglobin in the body, leukemia is demonstrated with an increase in the white blood cells, and thrombocytosis is an increase in the number of platelets. Polycythemia refers to an abnormal excess of the red blood cells.

Question 7

Red blood cells that appear similar in size and shape with the appropriate amount of hemoglobin may be described as ____________and normochromic.Short Answer

Accepted Answer

The answer of Red blood cells that appear similar in...

Question 8

What is the reference (normal) range for the platelet count?

Accepted Answer

Reference ranges vary slightly, but the reference range for platelet counts is always very close to 150,000-450,000/mm³.

Question 9

The platelet count may be decreased when a patient has a viral infection. The decrease in platelets is termed _____________.

Accepted Answer

The answer of The platelet count may be decreased when...

Question 10

A malignant condition where a large number of white blood cells are produced in the bone marrow at the expense of normal ones is termed:

Accepted Answer

The other choices here are all referring to abnormal numbers of other types of cells or components of cells.

Question 11

A red blood cell that has an abnormally large, pale center when visualized on a stained smear is called:

Accepted Answer

Red blood cells always have a center that is pale as compared to the outside borders of the cell. However, when this area is abnormally large and appears very light in color, the red cell is described as being hypochromic.

Question 12

The results of the CBC show a white blood cell count above the reference (normal) range. What term is used to describe this white blood cell count?

Accepted Answer

Leukocytosis is a term used to describe an increase in the white blood cells.

Question 13

Which of these terms refers to the size of an erythrocyte?

Accepted Answer

These are all terms referring to the appearance of the erythrocytes. Anisocytosis refers to the shape, hypochromic and hyperchromic refer to the color, and macrocytosis refers to the size.

Question 14

Francee Jones is providing a tour of the office laboratory to some local community college students. One of the students asks Francee what principle is used in the Coulter counter she uses to perform CBC tests. What should she say?

Accepted Answer

The answer of Francee Jones is providing a tour of...

Question 15

Red blood cells are normally visualized in a wide variety of sizes and shapes on the stained blood smear.Completion
Complete each statement.

Accepted Answer

Red blood cells should appear somewhat uniform when viewed on a stained blood smear. There will be slight differences in their sizes, shapes, and color, but not a wide variety of differences.

Question 16

The white blood cell differential may be performed manually in a physician office laboratory using a centrifuge.

Accepted Answer

The white blood cell differential may be performed by using an automated hematology analyzer or by examination of a stained blood smear, but not by using a centrifuge.

Question 17

Which of these disorders usually demonstrates an elevated platelet count?

Accepted Answer

Thrombocytosis refers to the thrombocytes and is a term used to describe an elevated presence of thrombocytes in the bloodstream.

Question 18

What is the type of white blood cell (of the five white blood cell types typically seen) that is normally found least in frequency on the leukocyte differential?

Accepted Answer

Basophils are present in the lowest frequency of all the white blood cells. The relative frequency for the white blood cell types from most common to least common is neutrophils, lymphocytes, monocytes, eosinophils, and basophils.

Question 19

The red blood cell indices are used to describe the red blood cells and the hemoglobin content.

Accepted Answer

Red blood cell indices are calculations that provide additional information about the size of the red cells and their relative hemoglobin content.

Question 20

The most prevalent leukocyte in the general circulation is the _________________.

Accepted Answer

The answer of The most prevalent leukocyte in the general...

Quiz 12: Complete Blood Count Cbc With Differential