Blood and Immune 9 Flashcards
(182 cards)
pathogens
disease-causing agents
erythrocytes
(red blood cells) are biconcave discs with no nucleus
leukocytes
(white blood cells) colorless cells that circulate in body fluids
platelets
(thrombocytes) cell fragments without a nucleus
plasma
(fluid matrix of blood) contains proteins and other solutes
albumin
main protein in plasma
fibrinogen
blood clotter in plasma
globulins
antibodies in plasma
serum
plasma without fibrinogen
blood is made up of
45% formed elements and 55% plasma
blood
fluid that circulates through the heart, arteries, capillaries, and veins, transporting oxygen, carbon dioxide, and nutrients to the tissues
formed elements
blood cells and cellular fragments
packed cell volume
the volume of blood cells in a sample after it has been centrifuged; normally about 45% of the blood sample
plasma
liquid portion of blood that carries formed elements, clotting factors, electrocytes, and proteins
serum
liquid portion of blood left after removing the clotting factors and blood cells
bone marrow
soft tissue within medullary cavities of bone, with multiple functions including the production of blood cells
erythropoietin (EPO)
hormone released by kidneys that stimulates red blood cell production in bone marrow
hemopoiesis; hematopoisis
formation of various types of blood cells and other formed elements
lymphatic system
network of vessels, lymph nodes, and lymphatic organs that plays a role in immunity by collecting lymph
lymph
colorless liquid containing white blood cells that drains through the lymphatic system into the bloodstream
lymph node
bean-shaped body in which lymph is filtered and lymphocytes are formed
spleen
vascular lymphatic organ responsible for filtering blood, destroying old red blood cells, producing red blood cells before birth, and storing blood
erythrocyte; red blood cell
red blood cell that carries oxygen and carbon dioxide
hemoglobin (HGB, Hb, Hgb)
protein in red blood cells that binds to oxygen; gives red blood cells the characteristic color