Blood And Lymphatic System Flashcards
Functions of blood
Transport and distribute - o2 and co2, nutrients etc
Protection- prevent fluid loss through damaged vessels
Regulation- regulates pH and electrolyte composition and regulates body temperature
Erythrocytes function
Have no nuclei
Hemaoglobin- oxygen carrying protein
Bioncave- more surface area
Oxygen carrying protein- 4 chains of amino acids each with iron which is binding sites for O2 and CO2
Leukocytes function
White blood cellls protect body from infectious microorganisms
Have a Nucleus
What are the 2 types of leukocytes
Granulocytes
Agranulocytes
What are the 3 granulocytes ?
Neutrophils- phagocytise and destroy bacteria, pick up acidic and basic stains
Eosinophils- ending allergic reactions
Basophils- release histamines and function in Inflammation mediation
What are 2 Agranulocytes?
Lymphocytes- important cells of immune system and effective in fighting infectious organism and act against antigen
T cells and B cells
Monocytes- largest leukocytes and transform into micrphages and phagocytic cells
Explain T cells and B cells?
T cells attack foreign cells directly
B cells multiply to become plasma cells- secrete antibodies
Function of platelets
Involved in stopping bleeding when blood vessel is damaged- hemostasis
What is the hormone called that stimulates RBC production ?
Erythropoietin
What is Hemotopoeisis ?
Development of ALL cells in blood
What is Erythropoeisis function
Process of RBC development only
Production of bone marrow
Erythrocytes lack nucleus and organelles no cell division
Blood disorders
Erythrocytosis
Neutrophilia- increased neutrophils during infections
Anaemia- deficiency of hemoglobin
