Unit 8 - Blood, Lymphatic and Immune System Key Terms Flashcards
erythrocyte
red blood cell
hematopoiesis
blood formation
leukocyte
white blood cell
plasma
liquid portin of blood containing 90% water
platelets
cells responsible for the coagulation of blood, also called thrombocytes
hemoglobin
iron containing pigment of red blood cells
pathogens
disease-bearing organisms
hematoma
swelling or mass of blood caused by break in vessel in organ or tissue, also called a bruise
erythrocytosis
too many red cells
hemolytic anemia
anemia that develops as a result of excessive loss of erythrocytes
lymph
clear, transparent colorless fluid found in lymphatic vessels
lymph nodes
small organs in lymphatic system that filter bacteria and other foreign organisms from body fluids
spleen
organ that filters microorganisms and old red blood cells from blood
thymus gland
endocrine gland that assists body with immune function and development of antibodies
tonsils
collection of lymphatic tissue located in the pharynx to combat microorganisms entering the body through the nose or mouth
lymphatic vessels
extensive network of vessels that conduct lymph from tissue toward thoracic cavity
lymph glands
small organs composed of lymphatic tissue located along the lymphatic vessels
T cells
lymphocytes active in cellular immunity
passive acquired immunity
immunity that results when a person receives protective substances produced by human or animal
active acquired immunity
immunity developing after direct exposure to a pathogen
antibody
protein material produced in body as a response to invasion of foreign substance
nosocomial infection
infection acquired as a result of hospital exposure
