Lesson 2-8 QUESTIONS & ANSWERS 100% SOLVED!

Why is it important to identify blood cells? - ANSWER-The information gained can be important in the diagnosis and treatment of certain diseases. What three features of cells are evaluated during cell identification? - ANSWER-Cell size, nuclear characteristics, and cytoplasmic characteristics. What are the five types of WBC's? - ANSWER-Neutrophils, Lymphocytes, monocytes, basophils, and eosinophils What is the source of platelets? - ANSWER-Platelets are fragments of the cytoplasm of a bone marrow cell, the megakaryocyte. Describe the area of the smear used to identify blood cells. - ANSWER-View an area in the feathered edge of the smear where the red cells are just touching but not overlapping. What microscope adjustments or settings should be made to examine stained blood smears? - ANSWER-The smear should be examined using oil immersion; position the microscope condenser so that it almost touches the bottom of the slide being examined; open the diaphragm to allow maximum light. Describe the microscopic appearance of stained RBCs. - ANSWER-Normal red blood cells are round or slightly oval, stain pinkish-tan, lack a nucleus, and have a central area of pallor. Describe the appearance of platelets in a stained blood smear. - ANSWER-Platelets are approximately 1/3 the diameter of a red blood cell. The platelet cytoplasm stains bluish and usually contains small reddish-purple granules. Platelets can be round, oval, or have spiny projections. What color granules are present in neutrophils? - ANSWER-Small neutral staining (pink-lilac) granules What color granules are present in eosinophils? - ANSWER-reddish orange granules What color granules are present in basophils? - ANSWER-purple to blue-black granules How do small and large lymphocytes differ in appearance? - ANSWER-Small lymphocytes are slightly larger than RBCs with only a small rim of cytoplasm visible around the nucleus. Large lymphocytes can be twice the diameter as RBCs and have more visible