Blood and Blood Cells Flashcards
What are the primary constituents of blood?
Some primary constituents of blood are:
Blood cells and blood plasma.
What is blood?
Blood is a bodily fluid in animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.
What is haematopoiesis?
Haematopoiesis is the formation of blood cellular components. All cellular blood components are derived from haematopoietic stem cells.
What are the three main types of blood cells?
The three main types of blood cells are:
Red blood cells,
White blood cells,
Platelets.
What is a blood cell?
A blood cell, also called a haematocyte, is a cell produced by haematopoiesis and normally found in blood.
What is a red blood cell?
Red blood cells, or erythrocytes, are the most common type of blood cell and the vertebrate organism’s principal means of delivering oxygen (O2) to the body tissues via the blood flow through the circulatory system.
Where are red blood cells produced?
The red blood cells develop in the bone marrow and circulate for about 100–120 days in the body before their components are recycled by macrophages.
What is the main component of a red blood cell?
Haemoglobin is the main component of a red blood cell. It is an iron-containing bio molecule that is responsible for facilitating the transport of oxygen and blood’s red colour.
What is a white blood cell?
White blood cells, or leukocytes, are cells of the immune system involved in defending the body against both infectious disease and foreign materials.
Where are white blood cells produced?
The are five known types of white blood cell, and they are all produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell.
What are the five types of white blood cell?
The white blood cells are:
Monocytes, Neutrophil, Basophil, Lymphocyte, Eosinophil.
What is a platelet?
Platelets, or thrombocytes, are small, disk shaped clear cell fragments that do not have a nucleus, which are derived from fragmentation of precursor megakaryocytes.
What is the function of the platelets?
The platelets circulate in the blood of mammals and are involved in hemostasis, leading to the formation of blood clots.
What is a megakaryocyte?
A megakaryocyte is a bone marrow cell responsible for the production of blood thrombocytes (platelets), which are necessary for normal blood clotting.
What is blood plasma?
Blood plasma is the straw-colored/pale-yellow liquid component of blood that normally holds the blood cells in whole blood in suspension. It makes up about 55% of total blood volume.
