C14: Blood Flashcards
Memorize
What are the components and percentages of blood?
Plasma 55%, and cells 45%
What are the 3 types of cells in blood?
Erythrocytes, leukocytes, and thrombocytes
What is hemopoiesis?
The formation of blood cells
What are red blood cells?
They deliver oxygen and remove carbon dioxide
What are white blood cells?
They protect the body from pathogens
What are the 2 categories of WBC’s?
Granulocytes which contain granules, and agranulocytes which contain no granules
What are the 3 types of granulocytes and their functions?
Neutrophils: engluf and digest material
Eosinophils: involved in allergic reactions
Basophils: secretes heparin which prevents clotting so WBC’s can enter the area, and secretes histamine which attracts WBC’s
What are the 2 types of agranulocytes and their functions?
T lymphocytes: directly attack cancerous cells
B lymphocytes: produce antibodies against specific agents
What is the function of platelets?
Homeostasis, dissolution of blood clots and the prevention of unwanted blood clots.
What components of the capillaries help with exchange of materials?
Thin walls
Pores
Slow moving blood
A lot of surface area
What is the name for RBC, WBC and platelets?
RBC: erythrocytes
WBC: leukocytes
Platelets: thrombocytes
What is erythripoiesis?
The production of new erythrocytes (rbc), maintained through negative feedback loop
What is the process for breaking down rbc?
Microphages in the liver and spleen ingest and destroy rbcs
Hemoglobin is broken down into globin and heme
Globin is further broken down into A.A, which is used for energy to making new protein
Heme is broken down into Iron and bilirubin
Iron is moved to bone marrow to create new hemoglobin
Bilirubin is exreted into the intestines as part of bile
How does thrombocytes contribute to homeostasis?
Form platelet plugs
Which blood group doesn’t have any antibodies?
AB
