hematology

structure of blood

• Blood is composed of : 40% cells and 60% plasma

• All blood cells develop in bone marrow

• The cells that in the blood are

  • Erythrocytes (red blood cells)
    

• Leukocytes (white blood cells)
  

• Platelets

hematology

the study of blood

hematopoiesis

formation and development of blood

hemoglobin

a pigment that contains iron and when it picks up oxygen, it gives a red color

antigen

the virus, bacteria, anything disease causing

when working w blood, the proper PPE to wear is

gloves

when working with stains you should wear ____ and _____ and work in a well ventilated area

goggles and gloves

true or false - stains are hazardous to skin and eyes

true, inform instructor of accidents immediately and rinse with water

where should used slides be disposed of

broken glass box

where should used blood tubes and pipets be disposed of

biohazard bag

erythrocyte (RBC)

• The most abundant blood cell, contain hemoglobin

• Function - transport O2 throughout the body

leukocytes (WBC)

• Colorless (white) cells capable of movement that provide body defense

• Five types

  • Granulocytes - have granules in cytoplasm

    • 1. Neutrophil

    • 2. Basophil

    • 3. Eosinophil

• Agranulocytes - no granules in cytoplasm

  • 4. Lymphocyte

  • 5. Monocyte

neutrophil

function - to stop or slow down foreign organisms

• They work by:

  • Phagocytosis - to eat bacteria and dead cells

• Bacteriocidal - to kill bacteria

• How they get to infection site:

  • Sticky and can migrate through vessel walls

• Release chemicals to signal other neutrophils to infection site

  • How they get to infection site:

    • Sticky and can migrate through vessel walls

    • Release chemicals to signal other neutrophils to infection site

basophil

• Function - 

  • Phagocytosis

  • Act against allergic reactions

  • Produce heparin and histamine

eosinophil

• Functions - 

  • Moderate the inflammatory response

  • Phagocytosis

lymphocyte

• Plays a vital role in immunity

  • T-cells (memory cells) - cells are sensitized to an antigen, remember that antigen and fight it off next time

  • B-cells - divide to form many cells to fight an antigen

monocyte

• Largest blood cell, irregular shaped nucleus

• Function is phagocytosis

thrombocyte

• Also called platelets

• Function - 

  • Hemostasis (clotting) - stop bleeding by sticking to damaged vessels and clumping together, release proteins that help form a clot