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Blood

 

Blood

Specialised Connective Tissue

The purpose of this topic is to study the different blood cells and to do a differential white blood cell count. To do a differential white blood cell count, a blood smear is made and stained. For the practical, a slide has been prepared to use as a virtual slide.

Objectives

  • Identify, differentiate, describe and classify the various components of blood.
  • Describe the primary functions of blood, its fluid and cellular components, and its physical characteristics.
  • Describe the formation of the components of blood.
  • Identify the components visible on a Wright’s stained blood smear, using morphology and staining properties.
  • Count and calculate the approximate proportions of leucocytes on a blood smear.
  • Describe the life-cycle of the various components of blood.
  • Describe and discuss the functions of each of the components.

Preparation

Review the document - How to look at White Blood Cells at http://williams.medicine.wisc.edu/blood_smear.pdf

Slides for this week

For each slide, complete the work as listed below. Completing the whole slide will assist you in understanding and retention. For each slide, allocate an A3 spread in your workbook. Remember to add the slide and its page number to the index in the front of the book.

Calibration

  • Name the 4 major elements of blood.
  • Name the 5 types of white blood cells and tabulate their histological differences.
  • Name the precursor cells of platelets.
  • What is thrombocytopenia?
  • What is the main site of haematopoiesis?
  • Which blood disorder is the result of either impaired red cell formation or excessive red cell destruction?
WBC Type Nucleus Cytoplasm Granules
Neutrophils
Eosinophils
Basophils
Lymphocytes
Monocytes
 
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© julie 2020 marius loots