Blood Flashcards
Liquid connective tissue that consists of cells surrounded by a liquid extra cellular matrix
Blood
Fluid that bathes body cells and is constantly renewed by the blood
Interstitial fluid
Functions of blood
Transportation, regulation, protection
The straw colored liquid that is left after formed elements are removed from blood
Blood plasma
Proteins confined to blood
Plasma proteins
Three types of plasma proteins
Albumins, globulins, fibrinogen
Three principal components of formed elements of the blood
Red blood cells, white blood cells, platelets
Transport oxygen from the lungs to the body cells and deliver carbon dioxide from body cells to the lungs
Red blood cells
Protect the body from invading pathogens and other foreign substances
White blood cells
Fragments of cells that do not have a nucleus; release chemicals that promote blood clotting when blood vessels are damaged
Platelets
Percentage of total blood volume occupied by RBCs
Hematocrit
When the percentage of RBCs is abnormally high
Polyphemus
Process by which the formed elements of blood develop
Hemopoeisis
Highly vascularized connective tissue located in the microscopic spaces between trabeculae of spongy bone
Red bone marrow
Derived from mesenchyme; have the capacity to develop into many different types of cells
Pluripotent stem cells
Begin their development in red bone marrow and give rise to red blood cells, platelets, monocytes, neutrophils, eosinophils, basophils, and mast cells
Myeloid stem cells
Give rise to lymphocytes, begin their development in red blood marrow but complete it in lymphatic tissues
Lymphoid stem cells
No longer capable of reproducing themselves and are committed to giving rise to more specific elements of blood
Progenitor cells
Regulate the differentiation and proliferation of particular progenitor cells
Hemopoietic growth factors
Increases the number of red blood cell precursors
Erythropoietin
Hormone produced by the liver that stimulates the formation of platelets from megakaryocytes
Thrombopoietin
Small glycoproteins that are typically produced by cells such as red bone marrow cells,leukocytes, macrophages, fibroblasts and endothelial cells
Cytokines
Two important families of cytokines that stimulate white blood cell formation
Colony-stimulating factors and interleukins
Pigment that gives whole blood it’s red color
Hemoglobin
Produced by endothelial cells that line blood vessels and binds to hemoglobin
Nitric oxide