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Questions and Answers
What is the primary function of platelets in the blood?
Which type of white blood cell is characterized by a bilobed nucleus?
What changes occur in erythroid cells as they mature?
Which type of blood cell is primarily responsible for adaptive immunity?
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What is the main role of haematology analysers?
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What is the primary function of platelets in the blood?
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Which of the following best describes CD markers?
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What does a haematology analyser primarily measure in a blood sample?
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Which of the following is NOT a component of a bone marrow test?
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What is the role of mature lymphocytes in lymphocyte leukemia?
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Study Notes
Red Blood Cell Development and Indices
- Erythroid cell development progresses from early red cells in the bone marrow (BM) to mature red cells in the peripheral blood (PB).
- During maturation, chromatin condenses.
- Early red cells should not be present in peripheral blood.
- Mature red cells in PB appear as purple dots under a microscope.
White Blood Cell Types and Morphology
- Myeloid differentiation gives rise to neutrophils, eosinophils, and basophils.
- Neutrophils are found in peripheral blood (PB).
- Eosinophils have a bilobed nucleus.
- Basophils are also found in PB.
- Monocytes are found in PB.
- Lymphocytes (small and large) are present; small lymphocytes may appear microcytic. Chronic lymphocytic leukemia shows many mature, fragile lymphocytes that break easily during smear preparation.
Lymphocyte Identification
- CD markers (cluster of differentiation) are used to distinguish different cell types.
- All cells have receptors which may serve as targets.
Platelets
- Platelets (PB) are derived from megakaryocytes (BM).
- Platelets play a crucial role in early clot formation.
Hematology Analyzers
- Hematology analyzers count cells by measuring the number of times a laser beam is disrupted by the cells in a sample.
- A blood sample anticoagulant is added to prevent clotting during analysis.
Bone Marrow Examination
- Bone marrow tests are performed using samples from the iliac crest, sternum and/or pelvis.
- Bone marrow morphology and other tests including surface markers, karyotype analysis, and molecular genetics/mutation testing, are performed to assess bone marrow health.
- Additional tests assess platelet function and other cell types.
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Description
Test your knowledge on the development and classification of red and white blood cells. This quiz covers various stages of erythroid and myeloid differentiation, as well as lymphocyte identification and morphology. Perfect for students studying hematology and related fields.
