Blood, Lymph, and Immune Systems Ch.9 Flashcards
Plasma
liquid medium that blood is suspended in
Solid components of blood are?
red/white blood cells and platelets
Red blood cells
Erythrocytes. Transport O2 and CO2. anucleur, contains hemoglobin
White blood cells
Leukocytes. Protect the body against invasion by pathogens and foreign substances. consists of two classifications granulocytes or agranulocytes.
Platelets
Thrombocytes. smallest formed elements found in blood. function is clotting.
Granulocytes
Appear granulated when stained. includes neutrophils, eosinophils, and basophils
Agranulocytes
Arise in the bone marrow from stem cells. includes: monocytes and lymphocytes,
Neutrophils
Phagocytosis. responsible for ingesting and destroying bacteria and other foreign particles. Divided into 5 lobes. attracted to inflammation sites.
Eosinophils
Allergy, animal parasites
Basophils
Inflammation mediators, anticoagulant properties
Monocytes (macrophages)
phagocytosis. Largest leukocyte. crucial against viruses, intracellular bacterial parasites, and chronic infections.
Lymphocytes
B cells: adaptive immunity (humoral)
T cells: adaptive immunity (cellular)
Natural killer cells: destruction without specificity
What is the function of blood?
Deliver O2, remove waste, provide for coagulation, cellular communication, and fight foreign agents
Blood type O
universal donor
Blood type AB
universal recipient
Lymphatic system consists of what?
Lymph nodes
Lymph vessels and lymph fluid
Tonsils, thymus, and spleen
Function of lymphatic system
- network of vessels that drain excess interstitial fluid form tissue space and return it to the blood
- Maintains the cells that defend the body against disease-causing agents such as bacteria, viruses, and cancer.
How many and what types of immunity
2 types…humoral and cellular
humoral immunity
- protects against extracellular antigens…bacteria and viruses (that have not yet entered a cell)
- B cells produce memory cells and plasma cells
Cellular immunity
- responds to intracellular antigens viruses and cancer cells
- T cells
Anemia
deficiency of RBCs or hemoglobin…
- hemorrhagic anemia: Ebola
- hemolytic anemia: excessive RBC destruction (malaria)
- faulty hemoglobin production: sickle-cell
aden/o
gland
agglutin/o
clumping, gluing
bas/o
base (alkaline, opposite of acid)
blast/o
embryonic cell
chrom/o
color