Upload
marshall-wiggins
View
224
Download
2
Tags:
Embed Size (px)
Citation preview
Coagulation
Coagulation
Cut or injuryplatelets and injured tissue release Thromboplastin act on Prothrombin in plasma + Calcium ions converts to Thrombin the thrombin acts
as an enzyme and changes Fibrinogen Fibrincreating a mesh that traps red blood cells,platelets and plasma creating a blood clot.
Coagulation Cont.
• Anticoagulants prevent blood clotting• Heparin:antiprothrombin• Prothrombin is dependent on Vitamin K
Leukocytes
White Blood Cells
Leukocytes
• Larger than erythrocytes
• Five types
Leuk/o/cytes –white cells
2.01 Remember the structures of the circulatory system
5
Leukocytes
• Larger than erythrocytes• Granular or agranular• 5 types• Normal leukocyte count = 3,200 – 9,800• Diapedesis- when WBC have the ability to
squeeze through the intercellular spaces of capillary walls to fight infection in neighboring tissues.
2.01 Remember the structures of the circulatory system
6
Leukocytes
• Agranulocytes• Lymphocytes • Monocytes
• Granulocytes• Neutrophils• Eosinophils• Basophils
2.01 Remember the structures of the circulatory system
7
Thrombocytes
• Smallest of solid components of blood
• Synthesized in red marrow
• Not cells, composed of fragments of megakaryocytes
• Necessary for the initiation of the blood clotting process
2.01 Remember the structures of the circulatory system
8
Types of White Cells…Neutrophils Eosinophils Basophils Lymphocytes Monocytes
Granuloccyte formed in the bone marrowPhagocytize bacteria
GranulocyteFormed in the bone marrowIncrease in numbers in allergic conditions, malaria and in worm infestation.
Produce heparin an anitcoagulantGranulocyte Count increases during chronic inflammation and during healing from infection.
Agranulocyte absence of cytoplasmic granules formed in lymph glands, nodes and bone marrow. B-lymphocytes and T-lymphocyte Protect against cancer cells.
Assist in phagocytosis leave blood vessels and attach themselves to tissues, during infection they help to wall off and isolate the infectedareaAgranulocyte
Life Span of Blood cells 2.01 Remember the structures of the circulatory system
10
Phagocytosis – process when white cells surround engulf, and digest harmful bacteria.
Inflammation
Inflammation
Pathogenic disease producing microorganisms can cause inflammation. Why?
Bacterial toxins, increase blood flow, collection of plasma in tissues – edema.
Body’s reaction to chemical or physical trauma.
Symptoms – redness, local heat, swelling and pain
Histamine increases the blood flow to the injured area.
Pus produced a combination of dead tissue, dead and living bacteria, dead leukocytes and plasma
Start
Inflammation
Inflammation Cont.
AbscessPus-filled cavity below the epidermis.
PyrexiaIncrease in body temperature by the hypothalamus in response to pathogenic invasion
LeukocytosisIncrease in the number of white cells in response to infection
LeukopeniaDecrease in number of white cells due to chemotherapy or radiation
Hematology BM #2
BM #3
Hematology BM#2 Questions
1. Name and describe the five different types of what blood cells.
2. Draw a picture for each white blood cell with their job for your body. • For example if they eat the
bacteria draw a big mouth as the WBC and a bacteria inside.
3. What is inflammation? Describe a time when you had an inflammation.
4. List the process of coagulation.
Remember to copy the words from the bubble map in color and color the pictures.