Histology of Periphal Blood Flashcards
Average amount of blood in the human body
5 liters
Average amount of blood needed for testing
3-5cc
Contains growth factors and other proteins released from platelets during clot formation
Serum
%erythrocyte concentration in the blood
Hematocrit
Function of plasma proteins
Buffer
Formed element whose function does not require it to leave vasculature
Erythrocytes
Molecules responsible for erythrocyte biconcave shape
Spectrin, ankyrin
Basophilia have an affinity for which dye
Methylene blue
Significance of biconcave structure of erythrocytes
Increased surface area-to-volume ratio; aids with its function as an O2 carrier
Younger RBCs containing remnants of nuclear material
Reticulocytes
Small, nonnucleated membrane-bound cell fragments originating from megakaryocytes
Thrombocytes
Types of granules present in leukocytes
Specific (for non-enzymatic antibacterial activity)
Azurophilic (comparable to lysosomes in function)
Mixture of apoptotic neutrophils, bacteria, and semidigested material
Pus
Formed elements which are complete cells
Leukocytes
Source of energy for formed elements
Glycolysis
Contents of basophilic granules
Heparin and histamine
Phenomenon wherein tissues of different parts of the body release histamine and other substances, causing airways to tighten
Anaphylactic shock
Smallest leukocytes
Lymphocytes
T-cells which release signaling molecules to attract and activate B lymphocytes
Helper T cells
T cells which secrete substances that kill virus-infected cells
Cytotoxic t cells
T cells which reduce the autoimmune response, protecting self tissues
Supressor T-cells
Lymphocytes responsible for producing immunoglobulins
B cells
Antigen-presenting cells; precursor to various macrophages
Monocytes
4 plasma proteins
Albumin, globulins, fibrinogen, complement proteins
Function of plasma
Exert colloidal pressure
Cells which release eosinophil chemotactic factors during allergic reactions
Basophils, mast cells
