Chapter 28 Flashcards
What is myelopoiesis?
Formation and maturation of cells derived from myeloid stem cell
What are natural killer (NK) cells?
Lymphocytes that defend against microorganisms and malignant cells
Define neutrophil.
Fully mature WBC capable of phagocytosis; primary defense against bacterial infection
What is oxyhemoglobin?
Combined form of oxygen and hemoglobin; primarily found in arterial blood
What is phagocytosis?
Process of cellular ingestion and digestion of foreign bodies
What is plasma?
Liquid portion of blood
What is plasminogen?
Protein converted to plasmin to dissolve thrombi and clots
What is a platelet?
A cellular component of blood involved in blood coagulation (synonym: thrombocyte)
What is a red blood cell (RBC)?
A cellular component of blood involved in the transport of oxygen and carbon dioxide (synonym: erythrocyte)
What are reticulocytes?
Slightly immature RBCs, usually only 1% of total circulating RBCs
What is the reticuloendothelial system?
Complex system of cells throughout the body capable of phagocytosis
What is serum?
Portion of blood remaining after coagulation occurs
Define stem cell.
Primitive cell, capable of self-replication and differentiation into myeloid or lymphoid stem cell
What is stroma?
Component of the bone marrow not directly related to hematopoiesis but serves important supportive roles in this process
What is a thrombocyte?
A cellular component of blood involved in blood coagulation (synonym: platelet)
What is a white blood cell (WBC)?
One of several cellular components of blood involved in defense of the body; subtypes include neutrophils, eosinophils, basophils, monocytes, and lymphocytes (synonym: leukocyte)
